Relevant bibliographies by topics / Tibia, surgery

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  2. Dissertations / Theses
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  5. Conference papers

Academic literature on the topic 'Tibia, surgery'

Author: Grafiati
Published: 4 June 2021
Last updated: 27 January 2023

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Journal articles on the topic "Tibia, surgery"

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Palanisami, Dhanasekararaja, Melvin J. George, Arif Mohammed Hussain, Chunchesh MD, Rajkumar Natesan, and Rajasekaran Shanmuganathan. "Tibial bowing and tibial component placement in primary total knee arthroplasty in valgus knees: Are we overlooking?" Journal of Orthopaedic Surgery 27, no. 3 (August 30, 2019): 230949901986700. http://dx.doi.org/10.1177/2309499019867006.

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Purpose: Tibial bowing in valgus knees with arthritis can lead to component malplacement during total knee arthroplasty (TKA). Incidence of valgus knees with medial tibial bowing, its effect on tibial component placement during primary TKA and methods to improve accuracy of the component placement were studied. Methods: Full-length weight-bearing alignment radiograph was taken in 117 patients (149 knees) with valgus deformity undergoing TKA. In these cases, the proximal tibial reference for extramedullary jig placement was planned preoperatively with reference to the tibial spines and classified as four zones. Results: The mean preoperative hip–knee–ankle (HKA) angle was 192.9° (180.3–234.5°). Bowing >3° was considered significant ( p < 0.001) and at this level of bowing, the proximal tibial reference was shifted from centre to medial. Tibial bowing <3° was considered straight and >3° as tibia valga. Tibia was bowed in 70 knees (46.97%). Severity of valgus deformity had strong positive correlation with the tibia valga ( p < 0.001). The post-operative medial proximal tibial angle (MPTA) and HKA angle were 91.63° (87.9–95.7°) and 182.6° (178.1–189.7°), respectively. The mean MPTA and post-operative HKA angle in bowed and straight tibiae were 90.35° versus 89.78° ( p = 0.547) and 181.5° versus 180.7° ( p = 0.5716), respectively, and the difference was not statistically significant. Conclusion: Medial tibial bowing is very common in valgus knees. Tibia valga has a strong positive correlation with the severity of valgus deformity. Accurate tibial component placement can be achieved with a medialized reference point for extramedullary tibial cutting jig in knees with significant tibia valga. The study has been registered in clinical trials registry – India (CTRI/2018/03/012283).
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Robbins, Craig A. "Deformity Reconstruction Surgery for Blount’s Disease." Children 8, no. 7 (June 30, 2021): 566. http://dx.doi.org/10.3390/children8070566.

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Blount’s disease is an idiopathic developmental abnormality affecting the medial proximal tibia physis resulting in a multi-planar deformity with pronounced tibia varus. A single cause is unknown, and it is currently thought to result from a multifactorial combination of hereditary, mechanical, and developmental factors. Relationships with vitamin D deficiency, early walking, and obesity have been documented. Regardless of the etiology, the clinical and radiographic findings are consistent within the two main groups. Early-onset Blount’s disease is often bilateral and affects children in the first few years of life. Late-onset Blount’s disease is often unilateral and can be sub-categorized as juvenile tibia vara (ages 4–10), and adolescent tibia vara (ages 11 and older). Early-onset Blount’s disease progresses to more severe deformities, including depression of the medial tibial plateau. Additional deformities in both groups include proximal tibial procurvatum, internal tibial torsion, and limb length discrepancy. Compensatory deformities in the distal femur and distal tibia may occur. When non-operative treatment fails the deformities progress through skeletal maturity and can result in pain, gait abnormalities, premature medial compartment knee arthritis, and limb length discrepancy. Surgical options depend on the patient’s age, weight, extent of physeal involvement, severity, and number of deformities. They include growth modulation procedures such as guided growth for gradual correction with hemi-epiphysiodesis and physeal closure to prevent recurrence and equalize limb lengths, physeal bar resection, physeal distraction, osteotomies with acute correction and stabilization, gradual correction with multi-planar dynamic external fixation, and various combinations of all modalities. The goals of surgery are to restore normal joint and limb alignment, equalize limb lengths at skeletal maturity, and prevent recurrence. The purpose of this literature review is to delineate basic concepts and reconstructive surgical treatment strategies for patients with Blount’s disease.
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Yassin, Mustafa, Avraham Garti, Muhammad Khatib, Moshe Weisbrot, Uzi Ashkenazi, Edward Ram, and Dror Robinson. "The Utility and Limitations of the Transfibular Approach in Ankle Trauma Surgery." Case Reports in Orthopedics 2014 (2014): 1–4. http://dx.doi.org/10.1155/2014/234369.

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The commonly used extensive approaches to the distal tibia include the posteromedial and anterolateral approaches. The current report describes several cases performed using this technique establishing a rationale and safe zone for performing a transfibular approach to the distal tibia. The advantages of such approach are the excellent visualization of the lateral tibia and the articular space. The utilization of this approach involves the risk of injury to the anterior tibial vessels and to the superficial peroneal nerve as well as a requirement for syndesmosis reconstruction. The recommendation is to utilize this approach in cases of severe comminution of the lateral tibia with a relatively intact medial tibia.
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Ho, Jade Pei Yuik, Azhar Mahmood Merican, Khairul Anwar Ayob, Shahrul-Hisham Sulaiman, and Muhammad Sufian Hashim. "Tibia vara in Asians: Myth or fact? Verification with three-dimensional computed tomography." Journal of Orthopaedic Surgery 29, no. 1 (January 1, 2021): 230949902199261. http://dx.doi.org/10.1177/2309499021992618.

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Background: There is a common perception among surgeons that Asian tibiae are significantly more varus compared to non-Asians, contributed both by an acute medial tibial proximal angle (MPTA) and diaphyseal bowing. Insight into the normative morphology of the tibia allows generation of knowledge towards disease processes and subsequently planning for corrective surgeries. Methods: Computed tomography (CT) scans of 100 normal adult knees, aged 18 years and above, were analysed using a 3-dimensional (3D) analysis software. All tibiae were first aligned to a standard frame of reference and then rotationally aligned to the tibial centroid axis (TCAx) and the transmalleolar axis (tmAx). MPTA was measured from best-fit planes on the surface of the proximal tibia for each rotational alignment. Diaphyseal bowing was assessed by dividing the shaft to three equal portions and establishing the angle between the proximal and distal segments. Results: The mean MPTA was 87.0° ± 2.2° (mean ± SD) when rotationally aligned to TCAx and 91.6° ± 2.7° when aligned to tmAx. The mean diaphyseal bowing was 0.1° ± 1.9° varus when rotationally aligned to TCAx and 0.3° ± 1.6° valgus when aligned to tmAx. The mean difference when the MPTA was measured with two different rotational alignments (TCAx and tmAx) was 4.6° ± 2.3°. No statistically significant differences were observed between males and females. Post hoc tests revealed statistically significant difference in MPTA between different ethnic sub-groups. Conclusion: The morphology of the proximal tibiae in the disease-free Asian knee is inherently varus but not more so than other reported populations. The varus profile is contributed by the MPTA, with negligible diaphyseal bowing. These implications are relevant to surgical planning and prosthesis design.
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Zhong, Hua, Sushuang Ma, Yibiao Cen, Limin Ma, Deqiang Li, Bo Liang, Jin Chen, and Yu Zhang. "A case report of early unilateral external fixation by 3D printing and computer-assisted and secondary bone graft internal fixation in pseudarthrosis of the tibia surgery." Journal of International Medical Research 48, no. 9 (September 2020): 030006052094551. http://dx.doi.org/10.1177/0300060520945518.

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Congenital pseudarthrosis of the tibia (CPT) is a rare congenital malformation. It is characterized by a tibial anterior bowing deformity or specific types of non-union, which typically result from abnormal development of the tibia, leading to the formation of local pseudarthrosis. The treatment of CPT is very challenging. The advent of 3D printing and computer-assisted techniques in recent years has provided a new ancillary technique for treatment planning and implementation. This case report describes the successful surgical treatment of a 14-year-old male that presented with a shortened limb deformity. Ahead of elective surgery, 3D printing and computer-assisted techniques were used to provide a 1:1 model of his left tibia, fibula and ankle joint to precisely determine the surgical procedure. The first surgery did not result in complete calcification of the tibial extension area, so a second proximal tibia iliac bone graft and internal fixation surgery was undertaken. Following regular follow-up and rehabilitation, by the 18-month follow-up, the proximal tibial bone graft had healed and the patient had resumed walking with a normal gait. This case report describes in detail the successful use of unilateral external fixation using the Ilizarov technique, 3D printing and computer-assisted orthopaedic surgery in the planning of treatment for CPT.
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Sindunata, Nyoman Aditya, Prettysia Suvarly, Rio Aditya, and John Butarbutar. "Knee Arthroplasty in Severe Varus Advanced Knee Osteoarthritis with Proximal Tibia Malunion: a case report." Orthopaedic Journal of Sports Medicine 8, no. 5_suppl5 (May 1, 2020): 2325967120S0005. http://dx.doi.org/10.1177/2325967120s00054.

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Alignment is crucial for successful knee arthroplasty.1 Tibia malunion will make arthroplasty more challenging. In this case, we present advanced knee osteoarthritis with tibia vara due to malunion that needs corrective osteotomy during knee arthroplasty. Case Presentation: A 70 years old female presented to our office complaining pain in both knees markedly on the left, profoundly felt during walking. She has a history of being hit by motorcycle 15 months ago and left knee was more bent since then. Physical examination of the left knee showed severe varus, mild effusion, tenderness on medial tibial condyle, otherwise normal. Plain radiographs showed advanced bilateral knee osteoarthritis with left proximal tibia malunion. Patient underwent left knee arthroplasty with corrective tibia and fibula osteotomy. Solutions and Outcome: Patient underwent closed wedge tibial osteotomy together with fibula osteotomy followed by knee arthroplasty with posterior-stabilized implant and tibial stem extension in a single surgery. Tibial osteotomy was reinforced using plate and screws. Partial weight bearing was achieved in second postoperative day and discharged on the third day. Patient able to walk with painless left knee after 1 month. Discussion: Severe deformity that causes huge malalignment makes knee arthroplasty difficult. Some methods are available to correct malalignment.1 In this case, the surgeon chose to do closed wedge tibial osteotomy reinforced with plate and screws to correct the proximal tibia malunion. Arthroplasty was done using posterior-stabilized implant and tibial stem extension. Patient shows good result in alignment and function. Conclusion: Correcting the associated deformity is crucial in achieving good alignment in knee arthroplasty. Even in our case of severe genu varus due to proximal tibia malunion, correcting proximal tibia varus deformity prior to knee arthroplasty shows good alignment and function. References: Mullaji AB, Padmanabhan V, Jindal G. Total Knee Arthroplasty for Profound Varus Deformity. 2005;20(5):550–61.
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Hong, Yuhwan, Brent G. Parks, and Stuart D. Miller. "Biomechanical Analysis of Tibial Strength After Harvest of Unicortical Tibial Grafts from Two Different Sites." Foot & Ankle International 27, no. 3 (March 2006): 190–95. http://dx.doi.org/10.1177/107110070602700307.

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Background: Use of tibial strut grafts has several potential advantages over other donor sites and would be ideal as a harvest site for bone grafts if there are minimal or no resulting risks to tibial stability. Methods: Ten matched-pair cadaver tibiae were randomized to have a 1.5 × 4.0 cm cortical graft harvested from the tibial crest or 1 cm posterior to the tibial crest. Both locations were 6 cm distal to the tibial plateau. The grafts were removed using a high-speed oscillating saw, and each end of the tibia was mounted for testing and loaded onto a servohydraulic test frame. The samples were axially loaded with 720 N (162 lbs) of force, and an external rotational torque was applied at 5 degrees per second to failure. Failure torque for each tibia was recorded. A paired Student's t-test was used to determine whether any observed differences in failure torques were significant. Results: The torque to failure range for on-crest grafts was 11.65 to 81.76 Nm (average, 44.53 Nm; SD, 22.82 Nm). The torque to failure range for the tibiae with the graft 1 cm off-crest was 13.30 to 70.45 Nm (average, 41.64 Nm; SD, 17.83 Nm). All fractures were spiral, included the distalmost anterior corner of the donor site, and extended distally. There was no significant difference in torque to failure between the two donor sites ( p = 0.22). The grafts varied consistently in quality. Conclusion: Considering that there was no statistically significant difference in torque to failure between the two groups of tibiae, the site for tibial bone graft can be selected based on the shape of the cortical graft necessary for each specific surgery.
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Kamenaga, Tomoyuki, Takafumi Hiranaka, Yuichi Hida, Takaaki Fujishiro, and Koji Okamoto. "Morphometric analysis of medial and lateral tibia plateau and adaptability with Oxford partial knee replacement in a Japanese population." Journal of Orthopaedic Surgery 28, no. 2 (January 1, 2020): 230949902091930. http://dx.doi.org/10.1177/2309499020919309.

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Aims: In unicompartmental knee arthroplasty (UKA), tibial components must be correctly sized and positioned so that tibial cut surfaces are well covered without marked under- or overhang with impingement of the surrounding soft tissue. We used morphometric data of both medial and lateral tibial plateaus separately to plan UKA and evaluated the compatibility of the measurement data to the dimensions of six currently available tibial prostheses in a Japanese population. Materials and Methods: Using computed tomography, we preoperatively examined 60 patients (30 medial and 30 lateral osteoarthritis (OA)) scheduled for primary UKA at our hospital between 2013 and 2017. Each tibial cutting surface was measured in the transverse plane at 2 mm below the respective joint line. We used anteroposterior and mediolateral length to calculate the mediolateral length/anteroposterior ratio of both medial and lateral compartments. We then compared measurements across six current UKA systems: Oxford fixed tibia and fixed lateral tibia, Triathlon, TRIBRID, JOURNEY UNI, and HLS Uni Evolution. Results: We found no significant differences in morphometric data between the medial and the lateral OA. The cutting surface of lateral plateau, however, had smaller anteroposterior dimensions, greater mediolateral length, and higher mediolateral length/anteroposterior ratio than those of medial plateau. Therefore, in this Japanese population-based study, Oxford lateral tibia had good compatibility with the measurement data of lateral compartments. Conclusions: Lateral compartments had lower anteroposterior length, greater mediolateral length, and higher mediolateral length/anteroposterior ratio than those of medial compartments. We, therefore, strongly recommend using Oxford fixed lateral tibia for lateral OA over other current tibial prostheses because of superior coverage.
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Rodríguez-Collell, Juan Ramón, Damian Mifsut, Amparo Ruiz-Sauri, Luis Rodríguez-Pino, Eva María González-Soler, and Alfonso Amador Valverde-Navarro. "Improving the cementation of the tibial component in knee arthroplasty." Bone & Joint Research 10, no. 8 (August 1, 2021): 467–73. http://dx.doi.org/10.1302/2046-3758.108.bjr-2020-0524.r1.

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Aims The main objective of this study is to analyze the penetration of bone cement in four different full cementation techniques of the tibial tray. Methods In order to determine the best tibial tray cementation technique, we applied cement to 40 cryopreserved donor tibiae by four different techniques: 1) double-layer cementation of the tibial component and tibial bone with bone restrictor; 2) metallic cementation of the tibial component without bone restrictor; 3) bone cementation of the tibia with bone restrictor; and 4) superficial bone cementation of the tibia and metallic keel cementation of the tibial component without bone restrictor. We performed CT exams of all 40 subjects, and measured cement layer thickness at both levels of the resected surface of the epiphysis and the endomedular metaphyseal level. Results At the epiphyseal level, Technique 2 gave the greatest depth compared to the other investigated techniques. At the endomedular metaphyseal level, Technique 1 showed greater cement penetration than the other techniques. Conclusion The best metaphyseal cementation technique of the tibial component is bone cementation with cement restrictor. Additionally, if full tibial component cementation is to be done, the cement volume used should be about 40 g of cement, and not the usual 20 g. Cite this article: Bone Joint Res 2021;10(8):467–473.
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León-Muñoz, Vicente J., Alonso J. Lisón-Almagro, and Mirian López-López. "Planning on CT-Based 3D Virtual Models Can Accurately Predict the Component Size for Total Knee Arthroplasty." Journal of Knee Surgery 33, no. 11 (July 3, 2019): 1128–31. http://dx.doi.org/10.1055/s-0039-1692645.

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AbstractThe ability to predict accurate sizing of the implant components for total knee arthroplasty surgery can have several benefits in the operating room, in terms of simplifying the workflow and reducing the number of required instrument trays. Planning on a three-dimensional (3D) virtual model can be used to predict size. The aim of this study was to quantify the accuracy of the surgeon-validated plan prediction on a computed tomography (CT)-based system. The clinical records of 336 cases (267 patients), operated using a CT-based patient-specific instrumentation, have been reviewed for the size of implanted components. Preoperative default planning (according to the preferences of the surgeon) and approved planning have been compared with the size of implanted components for both the femur and tibia. The prosthesis size, preplanned by the manufacturers, was modified by the surgeon during the validation process in 0.9% of cases for the femoral component and in 2.7% of cases for the tibial component. The prosthesis size, preplanned by the surgeon after the validation process, was used in 95.8% for the femur and 92.6% for the tibia. Concordance on the size of the surgeon-validated plan and the finally implanted size was perfect for both, the femoral (κ = 0.951; 95% confidence interval [CI]: 0.92–0.98) and the tibial component (κ = 0.902; 95% CI: 0.86–0.94). The most frequent change of size (51%) was an increase by one size of the planned tibial component. Planning of knee arthroplasty surgery on a 3D virtual, CT-based model is useful to surgeons to help predict the size of the implants to be used in surgery. The system we have used can accurately predict the component size for both the femur and tibia. This study reflects a study of level III evidence.
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Dissertations / Theses on the topic "Tibia, surgery"

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Roussot, Mark. "Amputation rate following tibia fractures with associated popliteal artery injuries." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/25507.

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Objectives: 1. Determine the amputation rate; and 2. identify risk factors in patients with tibia fractures and associated popliteal artery injuries. Intervention: Amputation or limb salvage. Design: Retrospective case-control study. Setting: Level 1 trauma center. Patients: Thirty popliteal artery injuries with ipsilateral tibial fractures. Outcome measures: Primary and delayed amputation rates were determined. Risk factors tested for significance (Fischer's Exact) included: mechanism of injury, signs of threatened viability, compartment syndrome, fracture pattern, surgical sequence, and time delay from injury or presentation to revascularization. Results: The study group consisted of 22 males and 8 females, with a mean age of 31 years. Motor vehicle accidents and gunshot wounds constituted the mechanism in 17 and 11 patients respectively. Twenty-one were polytrauma victims. Intra/extra16 articular metaphyseal fractures (OTA 41 A-C) were recorded in 19 and diaphyseal (OTA 42 A-C) in 7 patients. Primary amputation was performed in 7 and delayed in 10 patients (overall rate 57%). No individual risk factors were predictive of amputation; however, the "miserable triad" of a proximal tibia fracture (OTA 41) with signs of threatened viability, and delay to revascularization ≥ 6 hours from injury or ≥ 2 hours from presentation was predictive of amputation (p = 0,036 and p = 0,018 respectively). Conclusions: We should aim to intervene within 6 hours following injury or 2 hours following presentation to reduce the risk of amputation. This provides a target for trauma teams even with uncertain time of injury. Level of Evidence: III.
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Puma, Kari L. "A biomechanical characterization of intramedullary reaming in the human tibia." Thesis, State University of New York at Buffalo, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=1594769.

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Intramedullary reaming is a technique used in orthopaedic trauma surgical procedures in which the intramedullary canal of a long bone is enlarged and prepared for the implantation of a nail to repair a fracture. Several complications of intramedullary reaming have been described in literature, including elevations in intramedullary pressure and temperature and damage to the blood vessels in the bone. However, the mechanics of intramedullary reaming in the human when performed by a surgeon have not been widely investigated. The purpose of this investigation was to characterize the mechanics of intramedullary reaming, using a novel reamer evaluation tool, performed by two operators of different experience levels. A surgical reaming system was modified with a wireless, custom sensor to measure axial force, torque and RPM of the reamer during use.

Ten cadaveric matched tibial pairs were harvested under IRB approval, and one bone of each pair was reamed by the attending orthopaedic trauma surgeon, the other by the orthopaedic surgery resident (PGY-2). Reaming began with a 9mm diameter reamer and proceeded in 0.5mm increments until the declaration of audible chatter, after which reaming proceeded to a maximum of 1.5mm beyond this point. Axial force, torque and reamer displacement were recorded, from which the time to reach the distal end and the mechanical work to reach the distal end were determined. These parameters were compared between operators at the reamer associated with chatter and the maximum reamer size beyond chatter, and also within individual operators to determine how the mechanics changed from initial chatter acknowledgement to the last, largest reamer used. Three matched pairs were excluded from analysis due to unforeseen difficulties during data collection or with the experimental procedure.

Analysis revealed that operator mechanics were not statistically different, with the exception of the application of axial load at the maximum reamer size beyond the declaration of chatter. The resident applied more axial force on the reamer than the attending surgeon for the maximum reamer size. For each operator, force, work and time increased from reaming at chatter to the last reamer used. The results of this study suggest that although the reaming procedure is not strongly operator dependent, there is likely to be a mechanical component of clinical concern associated with continued reaming after noticeable initial chatter. Additional studies with larger sample sizes and operator populations are necessary in order to draw further conclusions.

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Monaghan, Pierre. "Histological analysis of bovine bone grafting using the rat tibia model." Thesis, McGill University, 1994. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=55515.

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Experimental investigations were carried out concerning the use of bovine bone (Unilab Surgibone) grafted in the tibiae of rats. The first experiment evaluated tissue response of bovine bone as an inlay graft and the second experiment as an onlay graft. Histological and morphometric analyses were performed in order to obtain baseline data on tissue response for future experiments using titanium implants with bovine bone grafts in this model. Light microscopy demonstrated rapid incorporation of the inlay graft by new bone, whereas, the onlay graft was mainly encapsulated by fibrous tissue. However, a residual increase in the thickness of the outer cortex of the tibiae was observed with onlay graft. From the results of this study it appeared that Unilab Surgibone was biocompatible and did not induce a foreign body reaction. Future investigations using titanium implants in combination with the bovine bone grafts appears to be possible especially if an inlay/onlay design is attempted.
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RIQUELME, CLAUDIA C. "Efeitos da radiação laser em baixa intensidade no processo de cicatrização óssea em defeitos enxertados com osso bovino e membrana de colágeno reabsorvível: estudo 'in vivo'." reponame:Repositório Institucional do IPEN, 2006. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11701.

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Dissertacao (Mestrado Profissionalizante em Lasers em Odontologia)
IPEN/D-MPLO
Instituto de Pesquisas Energeticas e Nucleares - IPEN/CNEN-SP; Faculdade de Odontologia, Universidade de Sao Paulo, Sao Paulo
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ROSSI, MAURO C. C. "Análise comparativa da interface osso-implante, em tíbia de coelho, utilizando fresa cirúrgica e laser de Er, Cr:YSGG." reponame:Repositório Institucional do IPEN, 2006. http://repositorio.ipen.br:8080/xmlui/handle/123456789/11702.

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Dissertação (Mestrado Profissionalizante em Lasers em Odontologia)
IPEN/D-MPLO
Instituto de Pesquisas Energéticas e Nucleares - IPEN/CNEN-SP; Faculdade de Odontologia, Universidade de São Paulo, São Paulo
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Mozes, Alon. "3D A-Mode Ultrasound Calibration and Registration of the Tibia and Femur for Computer-Assisted Robotic Surgery." Scholarly Repository, 2008. http://scholarlyrepository.miami.edu/oa_dissertations/114.

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Registration is a key component for computer-navigated robot-assisted surgery. Invasive approaches such as fiducial-based and surface matching with mechanical probes are common but ultrasound may provide a non-invasive alternative. If an A-mode ultrasound transducer can be used to percutaneously select data points on the bones, a registration can be determined without needing any incision. This study investigates selecting an A-mode ultrasound transducer, calibrating it, analyzing the ultrasound signal, and using it to register a phantom sawbone tibia and femur as well as cadaveric specimens. This study is performed in conjunction with MAKO Surgical Corp.'s Tactile Guidance System™ (TGS™) at their headquarters and at The South Florida Spine Clinic for cadaveric experiments. The results for phantom and cadaveric ultrasound registrations compared to a mechanical probe approach demonstrate that A-mode ultrasound registration is a viable option for registration of the bones of the knee.
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Souza, Érica Siqueira de. "Estudo retrospectivo sobre a alteração do ângulo do plateau tibial durante a cicatrização óssea da TPLO em cães e execução prática da técnica de TPLO em cadáveres de cão." Master's thesis, Universidade de Lisboa, Faculdade de Medicina Veterinária, 2020. http://hdl.handle.net/10400.5/19838.

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Dissertação de Mestrado Integrado em Medicina Veterinária
O presente estudo avaliou a relação entre a alteração do ângulo do plateau tibial durante a cicatrização óssea e (a) o ângulo do plateau tibial (APT) pré-operatório, (b) o APT atingido no pós-operatório imediato e (c) a carga articular exercida pelo peso do paciente, em cães submetidos à Osteotomia de Nivelamento do Plateau Tibial (TPLO). Os APT foram avaliados em 32 casos e as medidas foram feitas, com auxílio de programas computacionais, através de radiografias digitais médio-laterais da tíbia. Cada um dos três observadores realizaram três medidas do APT, para cada caso, em cada momento estudado. Os dados obtidos foram analisados estatisticamente para assim avaliar a correlação entre eles bem como eliminar as possíveis interferênicas intra e interobervador. Como estudo complementar e com o objetivo de entender as dificuldades práticas da técnica de TPLO, 18 TPLOs foram executadas em cadáveres de cão. Para cada animal foram feitas radiográficas medio-laterais pré e pós operatórias para fazer o planeamento cirúrgico e avaliar os resultados finais, respetivamente. Os resultados deste estudo demonstraram que a alteração do ângulo do plateau tibial durante a cicatrização óssea, apesar de presente, não foi determinado pelos APTs pré-operatório e pós-operatório imediato bem como pelo peso do paciente, o que nos leva a concluir que a intensidade da alteração do ângulo do plateau tibial durante a cicatrização óssea não é determinada pela inclinação prévia do plateau tibial, por uma maior ou menor rotação do plateau tibial pela TPLO e que a carga exercida pelo peso do paciente sobre o joelho, após estabilização rígida por TPLO, não determina o comprometimento da rotação do plateau tibial e da estabilidade articular. A formação prática é de suma importância para a familiarização com a técnica cirúrgica e com o manuseio da serra oscilatória, antes da realização do procedimento “in vivo”.
ABSTRACT - BACKGROUND STUDY ON TPLO CHANGING OF TILT ANGLE OF THE TIBIAL PLATEAU DURING BONE HEALING IN DOGS AND PRACTICAL PERFORMANCE OF TPLO TECHNIQUE IN DOG CADAVERS - The present study evaluated the relationship between the changing of the angle of the tibial plateau during bone healing and the preoperative tibial plateau angle (TPA), the TPA achieved in the immediate postoperative period and the joint load caused by the patient's weight in dogs submitted to TPLO. The TPA were evaluated in 32 cases and the measurements were made, with the aid of computer programs, through tibial mid-lateral digital radiographs. Each of the three observers performed three TPA measurements, for each case, at every single moment. The objective data were statistically analysed in order to evaluate the correlation between them as well as to eliminate the possible intra and interobserver interferences. As a complementary study and in order to understand with the objective of understanding the practical difficulties of the TPLO technique, 18 TPLOs were performed on dog cadavers. Pre and postoperative medio-lateral radiographs were taken of each animal to make the surgical planning and to evaluate the final results, respectively. The results of this study demonstrated that, although present, the changing of the angle of the tibial plateau during bone healing was not determined by the preoperative and immediate postoperative TPAs as well as the patient's weight, which leads us to conclude that the intensity of the changing of the angle of the tibial plateau during bone healing is determined by the previous tibial plateau inclination, by a greater or lesser rotation of the tibial plateau by the TPLO and that the load exerted by the patient's weight on the knee after rigid stabilization by TPLO does not determine the impairment of tibial plateau rotation and joint stability. Practical training is very important to be comfortable with the surgical procedure and oscillating saw´s handling, before performing the procedure “in vivo”.
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Viegas, Alexandre de Christo. ""Análise das propriedades biomecânicas dos tendões dos músculos tibial anterior e tibial posterior : estudo experimental em cadáveres humanos"." Universidade de São Paulo, 2003. http://www.teses.usp.br/teses/disponiveis/5/5140/tde-11042006-162408/.

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O autor estudou as propriedades biomecânicas dos tendões dos músculos tibial anterior e tibial posterior congelados a -20°C e a -86°C extraídos de cadáveres humanos frescos. Foram realizados ensaios mecânicos de tração até a ruptura e determinadas as seguintes propriedades: resistência máxima, coeficiente de rigidez, módulo de elasticidade e alongamento máximo relativo. Os dados obtidos foram comparados aos existentes na literatura relativos ao ligamento cruzado anterior, ligamento da patela e aos tendões dos músculos grácil e semitendíneo
The author studied the mechanical properties of the anterior and posterior tibialis muscle tendons frozen at -20°C and -86°C obtained from fresh-frozen human cadavers. The tendons were submitted to axial traction until failure and the following properties were determined: ultimate load, stiffness, modulus of elasticity and relative strain. Data obtained were compared to those from the literature related to the anterior cruciate ligament, patellar tendon, gracilis and semitendinous tendons
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Chan, Yu-wai, and 陳汝威. "Posterior tibial flap: anatomical study and clinical experience." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41290823.

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Chan, Yu-wai. "Posterior tibial flap anatomical study and clinical experience /." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B41290823.

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Books on the topic "Tibia, surgery"

1

Heim, Urs. The pilon tibial fracture: Classification, surgical techniques, results. Philadelphia: W.B. Saunders, 1995.

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An atlas of closed nailing of the tibia and femur. London: Martin Dunitz, 1991.

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An atlas of closed nailing of the tibia and femur. New York: Springer-Verlag, 1991.

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F, Connolly John, ed. Tibial nonunion: Diagnosis and treatment. Park Ridge, Ill: American Academy of Orthopaedic Surgeons, 1991.

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Naidu Maripuri, S., and K. Mohanty. Tibial shaft fractures. Oxford University Press, 2011. http://dx.doi.org/10.1093/med/9780199550647.003.012057.

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♦ The tibia is the most commonly fractured long bone♦ The orthopaedic surgeon needs to be familiar with all of the management options available in order to effectively manage the simple and complex cases♦ Problems associated with the soft tissue envelope are frequently encountered.
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Gardiner, Matthew D., and Neil R. Borley. Trauma and orthopaedic surgery. Oxford University Press, 2012. http://dx.doi.org/10.1093/med/9780199204755.003.0009.

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This chapter begins by discussing the basic principles of musculoskeletal physiology, fracture assessment, and fracture management, before focusing on the key areas of knowledge, namely congenital and developmental conditions, the foot, the ankle, the knee, the femoral and tibial shaft, the proximal femur, the pelvis, the shoulder, the upper limb, degenerative and inflammatory arthritis, bone and joint infection, crystal arthropathies, musculoskeletal tumours, and metabolic bone conditions. The chapter concludes with relevant case-based discussions.
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Step By Step High Tibial Osteotomy By Hemicallotasis. Jaypee Brothers Medical Publishers, 2012.

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Arthroscopic meniscal repair. Rosemont, Ill: American Academy of Orthopaedic Surgeons, 1999.

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Vince, Kelly, and Jacob Munro. Revision total knee replacement. Oxford University Press, 2011. http://dx.doi.org/10.1093/med/9780199550647.003.008008.

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♦ Understanding the reason for failure of the original knee replacement is crucial prior to revision♦ The surgery should be a revision and not a repeat of the failed arthroplasty♦ There are eight reasons for failure of original knee replacements which should each be approached individually♦ Unexplained pain relating to a knee replacement requires further investigation before revision surgery can occur♦ Successful revision surgery is performed in three steps – preparation of a tibial surface, the knee in flexion and the knee in extension
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Meniscal Injuries Management And Surgical Techniques. Springer-Verlag New York Inc., 2013.

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Book chapters on the topic "Tibia, surgery"

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Wallace, Maegen. "Pseudarthrosis of the Tibia." In Orthopedic Surgery Clerkship, 635–38. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52567-9_135.

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Bell, John-Erik. "Tibia Intramedullary Nail." In Operative Dictations in Orthopedic Surgery, 169–71. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-7479-1_46.

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Hutson, James J. ": Tibial Calcaneal Arthrodesis with Proximal Tibia Lengthening." In Limb Lengthening and Reconstruction Surgery Case Atlas, 1–8. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-02767-8_177-1.

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Dosch, Austin R., Areg Grigorian, Christian de Virgilio, and Dennis Y. Kim. "Severe Right Leg Pain After Tibia Fracture." In Surgery, 529–34. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-05387-1_48.

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Nguyen, Andrew, Areg Grigorian, and Christian de Virgilio. "Severe Right Leg Pain After Tibia Fracture." In Surgery, 473–78. New York, NY: Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4939-1726-6_47.

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El-Rosasy, Mahmoud A. "Gunshot Tibia Fracture." In Limb Lengthening and Reconstruction Surgery Case Atlas, 1–7. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-02767-8_287-1.

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Saghieh, Said. "Anteromedial Tibia Tubercle Transfer." In Operative Dictations in Orthopedic Surgery, 161–63. New York, NY: Springer New York, 2013. http://dx.doi.org/10.1007/978-1-4614-7479-1_43.

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Hill, Robert A. "Congenital Posteromedial Bowing of the Tibia (Congenital Tibia Recurvatum)." In Limb Lengthening and Reconstruction Surgery Case Atlas, 1–5. Cham: Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-02767-8_53-1.

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Paley, Dror, and Craig Robbins. "Congenital Pseudarthrosis of Tibia." In Limb Lengthening and Reconstruction Surgery Case Atlas, 1–10. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-02767-8_35-1.

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Hill, Robert A. "Case 42: Congenital Posteromedial Bowing of the Tibia (Congenital Tibia Recurvatum)." In Limb Lengthening and Reconstruction Surgery Case Atlas, 293–96. Cham: Springer International Publishing, 2015. http://dx.doi.org/10.1007/978-3-319-18023-6_53.

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Conference papers on the topic "Tibia, surgery"

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Roglic, H., S. D. Kwak, J. H. Henry, G. A. Ateshian, W. G. Rodkey, J. R. Steadman, and V. C. Mow. "Adhesions of the Patellar and Quadriceps Tendons: Mathematical Model Simulations." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-0328.

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Abstract Following knee surgery, especially after anterior cruciate ligament (ACL) reconstruction, a small percentage of patients complain about significantly decreased patellar mobility accompanied by anterior knee pain, sometimes severe. The limited mobility and knee pain usually do not disappear even with aggressive physical therapy. Arthroscopic exploration of these knees reveals a closure of the patellar tendon-tibial (PTT) interval, i.e., severe fibrous adhesion of the patellar tendon to the anterior aspect of the tibia, the formation of fibrous tissue between the quadriceps tendon and the femur, and a ‘closed-off’ suprapatellar pouch. Other investigators have also noted such adhesion (Paulos et al., 1987 & 1994; Jacobson et al., 1989), and Hughston (1985) attributed the tendon adhesion to the scarring of infrapatellar and suprapatellar fat pad caused by the surgery. While the adhesions are important clinical problems associated with knee surgery, no study to date, other than our experimental study on patellar tendon contracture, has quantitatively investigated the effect of these adhesions on knee kinematics and contact forces (Ahmad et al., 1997). In this study, we use a 3-D mathematical model of the knee joint to analyze the effects of the patellar tendon adhesion (PA) to the anterior tibia, and the quadriceps tendon adhesion (QA) to the anterior femur. Our objective, therefore, is to demonstrate the effects of these types of post-operative adhesions on patellofemoral joint mechanics.
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Marmor, Meir, Erik N. Hansen, Hyun Kyu Han, Jenni M. Buckley, and Amir Matityahu. "Assessment of Radiographic Parameters for Adequate Reduction Following Syndesmotic Injury Causing Fibular Malrotation." In ASME 2010 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2010. http://dx.doi.org/10.1115/sbc2010-19082.

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Rotational ankle injuries are one of the most common musculoskeletal problems treated by orthopaedic surgeons. The distal tibio-fibular syndesmosis may be disrupted during injury resulting in ankle instability. The goal of surgery is to restore anatomic relation of tibia, fibula, and talus. Any malreduction including that of the syndesmosis may result in poor clinical outcomes [1]. While currently accepted radiographic criteria can adequately detect tibio-fibular diasthesis or translation malreductions, it is not yet clear if the currently these criteria are equally suited for detection of rotational malreductions of the tibio-fibular syndesmosis [2]. The goal of this study is to quantify the sensitivity of fluoroscopic measurements of tibio-fibular overlap (TFO) and tibio-fibular clear space (TCS) to rotational malreductions of the syndesmosis. Standard x-ray imaging will be compared with a 3D fluoroscan which will simulate postoperative CT [3].
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Nájera-Olvera, Pedro Antonio, and Prahlad G. Menon. "Automatic Identification of Genu Valgum From Tibio-Femoral Short Radiographs." In ASME 2015 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/imece2015-50206.

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Genu valgum is a cause of knee pain and early arthritis which requires therapeutic action with external braces or surgery at a young age. This paper describes an image processing workflow and validation study for automatic characterization of the valgus deformity (i.e. genu valgum) from tibio-femoral x-ray radiographs. We implement an image processing pipeline starting with basic filtering and bone segmentation, followed by application of a Hough transform to determine the centerline of the diaphyses of the femur and tibia based on which a TF subtended angle is measured for each leg. Feasibility of this workflow is demonstrated on 21 short TF radiographs. The automatically computed angles were highly correlated (r2 = 0.85 and p≪0.001) to the ground truth with a mean absolute error as low as 1.97°.
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Gagnon, Marianne, Mitchell Bernstein, and Louis-Nicolas Veilleux. "Pre-and post-surgery outcomes following derotational osteotomy of the femur and/or tibia: preliminary results." In 27th Annual Meeting of the GCMAS. GCMAS, 2022. http://dx.doi.org/10.52141/gcmas2022_80.

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Filip, F., S. Petrasuc, M. Creteanu, Maria Daniela Craciun, and Roxana Filip. "The Use of CT- Scan with 3- D Reconstruction for Planning Surgery In Children with Tibia Plateau Fractures." In 2018 International Conference and Exposition on Electrical And Power Engineering (EPE). IEEE, 2018. http://dx.doi.org/10.1109/icepe.2018.8559791.

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Xing, Qi, Mark M. Theiss, Wenzhen Yang, Jim X. Chen, and Jihui Li. "Automatic Assessment of Lower Extremity Deformity Based on Patient Specific Computer Models." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53808.

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Lower extremity deformity can cause joint pain and malfunction. Patients with severe deformity usually need a correction surgery or total knee replacement (TKR) surgery to realign the orientation of the femur and tibia. Lower extremity deformity needs to be accurately assessed before any clinical decision can be made. In practice, physicians and radiologists rely mainly on X-ray images to evaluate the deformity, and CT is used in complex cases only. Manual assessment on X-rays is tedious, time consuming and inaccurate [1]. Computer aided diagnosis was proved efficient to understand patients’ anatomy, analyze lower limb deformity and plan the possible surgery [2]. However, notable interactive works were required during the identification of the anatomic features, and the accuracy was unguaranteed when the physician is not familiar with the diagnosis software. In this study we developed an automatic assessment system to identify patients’ anatomic features and quantify lower extremity deformity.
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Khandaker, Morshed, Sadegh Nikfarjam, Karim Kari, Onur Can Kalay, Fatih Karpat, Helga Progri, Ariful Bhuiyan, Erik Clary, and Amgad Haleem. "Laser Microgrooving and Nanofiber Membrane Application for Total Knee Replacement Implants Using a Caprine Model." In ASME 2021 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2021. http://dx.doi.org/10.1115/imece2021-73597.

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Abstract Aseptic loosening is a well-recognized phenomenon in cementless total knee replacement (TKR) and often carries severe consequences for the patient. We recently developed and tested in vitro a novel strategy for enhancing osseointegration and acute mechanical stability of orthopedic implants that employ laser-induced microgroove (LIM) and nanofiber membrane (NFM) applications at the bone-implant interface. We report herein investigation of the approach with results from a pilot study employing three skeletally mature female Spanish cross goats (∼4y, 35–45kg) receiving cementless TKR with a commercially available implant system (Biomedrix® Canine Total Knee). Pre-operative radiographs were taken to ensure limb normality and to select the appropriately sized implants for each goat. With the animal under general anesthesia and the limb properly prepped for aseptic surgery, the stifle was approached, and osteotomies of the proximal tibia and distal femur performed in preparation for implantation of the tibial (TT) and femoral (FT) trays. For one goat, the arthroplasty implant surfaces were unaltered from the manufacturer’s mirror-polished (MP) condition. For the other two goats, the TT bone-contact surface was laser-micro grooved (150 μm depth, 200 μm width, 200 μm spacing) prior to sterilization and then implanted with (LIM/NFM) or without (LIM) an intermediate (surface-applied) polycaprolactone (PCL) nanofiber mesh (50 × 50mm, electrospun, aligned, unidirectional, 10 μm thickness). Following surgery, animals received appropriate analgesic therapy and rehabilitative care to maximize animal comfort, function, and quality of life while limiting the risk of major complications. Post-operative monitoring included assessment of mentation, vital signs, pain level, digestive function (weight, appetite, rumen contractions, feed intake, fecal output), and limb status (usage, range of motion, muscular volume). By the study’s end (12 wks), all animals had recovered a pre-surgery range of motion in the operated knee and exhibited typical bony changes on radiographic follow-up. At necropsy following humane euthanasia, no gross instability of TKR components was observed. Histomorphometric analysis of explanted bone-TT constructs showed the increased new bone surface area in the LIM-NFM sample (0.49 mm2) compared with the MP sample (0.03 mm2), suggesting that microgrooves and/or PCL nanofiber coating may improve the clinical performance of the implant. A finite element analysis (FEA) model was developed to explore the impact of surface micro grooving to the mechanical stimuli at the bone-implant interface to supplement the in vivo studies. The three-dimensional geometry of the tibia was scanned using computed tomography and imported into a proprietary (MIMICS®) software to construct the solid models for finite element micro-strain analyses.
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Gothard, Andrew T., and Steven R. Anton. "A Method to Generate 3D Patient-Specific Total Knee Arthroplasty Tibia Models." In ASME 2022 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/smasis2022-91008.

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Abstract Geometric information about a patient’s anatomy is vital in pre-operative planning for orthopedic surgeries. At present, many physicians rely on the analysis of 2D scans, such as radiographs, magnetic resonance images (MRIs), or computed tomography (CT) scans, in order to visualize a patient’s geometry. Research is being done to develop patient-specific 3D bone geometry to aid in pre-operative planning and assist in creating personalized finite element models that can help predict complications or failure after surgery. While 3D models are incredibly useful and have been developed for several parts of the human anatomy, there is still a great need for cost-effective ways to create personalized total knee arthroplasty (TKA) models. Currently, methods for creating patient-specific knee geometries typically only consider patients without TKA implants, rely on expensive medical imaging, such as layered CT scans, or require a large database of 3D models. This work presents a novel semi-automated process to create patient-specific 3D tibia geometry for TKA patients using pairs of standard, low-cost bi-planar radiographs. The method presented involves two main stages. In the first stage, the geometric bone contours from each view of the tibia are extracted from two bi-planar radiographs using gradient thresholding and Canny edge detection on user-defined regions of interest. The second stage aligns the two extracted tibia contours with a generic 3D tibia model from the 6th SimTK Grand Challenge Dataset and then modifies the generic 3D model to match the radiographic contours using a full-ellipse scaling and shifting (FESS) method. The effectiveness of the FESS method is evaluated by comparing the contours of the generated patient-specific model in the anteroposterior (AP) and lateral views to the radiograph contours in the AP and lateral views using difference calculations for three TKA patients. The maximum difference between the patient-specific models and the radiographs in both AP and lateral views is found to be on the order of 1 mm.
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Anderst, William J., and Scott Tashman. "In Vivo Bone Motion From High Frame Rate Stereo Radiography." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-43079.

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This paper presents a method to calculate functional joint space during dynamic movement. This method combines high-speed biplane radiographic image data and three-dimensional (3D) bone surface data obtained from computed tomography (CT). Subjects were patients undergoing anterior cruciate ligament (ACL) reconstructive surgery. Three tantalum beads were implanted bilaterally into both the femur and tibia during surgery. CT scans were performed after bead implantation, and the CT slices were reconstructed into 3D solid figures, with the implanted beads identifiable within the stack of CT slices. Subjects were tested 6,12 and 24 months post surgery. Testing activities included downhill running on a treadmill and one-legged hopping onto a force plate. During testing, the stereo-radiographic imaging system collected images at 250 frames per second. Later, the implanted beads were identified in the x-ray images and tracked in 3D with an accuracy of 0.10 mm. The 3D bead location data were used to position the reconstructed solid bone figures in 3D space. In this way, the location of each bone surface was determined each instant. This method can be used to identify the regions of close contact between bones during dynamic motion, to calculate the surface area of subchondral bone within close contact, and to determine the changing position of the close contact area during dynamic activities. Using these techniques, comparisons can be made between subchondral bone motion in healthy and reconstructed joints and changes in dynamic joint space can be measured over time.
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Danieli, G. A., D. Mundo, and V. Sciarra. "Use of Burmester’s Circular Theory in the Determination of the Optimal Four-Bar Link Reproducing Actual Tibia-Femur Relative Motion." In ASME 2001 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2001. http://dx.doi.org/10.1115/imece2001/bed-23048.

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Abstract The paper presents an application of Burmester’s circular theory to the determination of the optimal mechanism used to reproduce the motion of the tibia with respect to the femur. The research takes its start from the idea of studying an external fixator to guide the motion of a tibia in a way physically compatible to the actual patient’s anatomy, in order to firmly guide the two bones after, for instance, joint reconstructive surgery, while avoiding any contact between the articular surfaces. The physiological data were determined in researches presented in other papers. However, in the initial research phases the idea was to determine the best position of an existing four-bar link, produced for an orthopaedic tutor, without any attempt at synthesising an ad hoc one. The idea of using Burmester’s theory in this operation was in reality an old one, but previous attempts were not successful. Naturally, the required four-bar link had also to be small in order to fit on the external fixator. The results of the research are extremely satisfactory, since it was possible to determine a mechanism which allows relative motion with errors in the order of fractions of millimetres, when the imposed motion had to keep the two bones separated by a minimum of one millimetre. As a consequence the two bones will never go in compression, while a gentle pulling of the ligaments will always be present. Using the approach, typical four-bar links for different human typologies were also determined.
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