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Journal articles on the topic 'Unicompartmental Knee Replacement (UKR)'

Author: Grafiati

Published: 10 March 2023

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1

Kennedy, J. A., E. Burn, H. R. Mohammad, S. J. Mellon, A. Judge, and D. W. Murray. "Lifetime revision risk for medial unicompartmental knee replacement is lower than expected." Knee Surgery, Sports Traumatology, Arthroscopy 28, no. 12 (2020): 3935–41. http://dx.doi.org/10.1007/s00167-020-05863-3.

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Abstract Purpose Unicompartmental knee replacement (UKR) is widely considered to be a pre-total knee replacement (TKR) particularly in the young. The implication of this is that it is sensible to do a UKR, even though it will be revised at some stage, as it will delay the need for a TKR. The chance of a UKR being revised during a patient’s life time has not previously been calculated. The aim of this study was to estimate this lifetime revision risks for patients of different ages undergoing UKR. Methods Calculations were based on data from a designer series of 1000 medial Oxford UKR with mean

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Yu, Hiu-Kiu, Bruce Yan-Ho Tang, Hok-Leung Wong, Sumire Sasaki, and Tai-Fong Wong. "Better immediate and early postoperative outcomes of unicompartmental knee replacement comparing with total knee replacement: A matched cohort of patients with medial knee osteoarthritis." Journal of Orthopaedics, Trauma and Rehabilitation 28 (January 2021): 221049172110569. http://dx.doi.org/10.1177/22104917211056951.

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Introduction: This study compared the immediate and early postoperative outcomes of medial compartment knee osteoarthritis patients receiving unicompartmental knee replacement (UKR) with a matched cohort of total knee replacement (TKR). Methods: 26 UKR patients were matched with 26 TKR patients based on age, body mass index, pre-operative radiographic severity, range of motion (ROM), Knee Society score (KSS) and Feller patella score. Immediate postoperative outcomes were reflected by postoperative pain, blood loss, length of stay and the number of physiotherapy sessions attended. Early postope

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Ventura, Alberto, Claudio Legnani, Clara Terzaghi, Vittorio Macchi, and Enrico Borgo. "Unicompartmental Knee Replacement Combined to Anterior Cruciate Ligament Reconstruction: Midterm Results." Journal of Knee Surgery 33, no. 11 (2019): 1152–56. http://dx.doi.org/10.1055/s-0039-1692647.

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AbstractA study was conducted to retrospectively evaluate the outcomes of combined medial unicompartmental knee replacement (UKR) and anterior cruciate ligament (ACL) reconstruction. The hypothesis was that this procedure would lead to satisfying results in patients affected by medial osteoarthritis and ACL insufficiency. Fourteen patients with ACL deficiency and concomitant medial compartment symptomatic osteoarthritis were treated from 2006 to 2010. Twelve of them were followed-up for an average time of 7.8 year (range: 6–10 years). Assessment included Knee Osteoarthritis Outcome score (KOOS

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Hariri, Mustafa, Merlin Hagemann, Paul Mick, et al. "Physical Activity of Young Patients Following Minimally Invasive Lateral Unicompartmental Knee Replacement." Journal of Clinical Medicine 12, no. 2 (2023): 635. http://dx.doi.org/10.3390/jcm12020635.

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Unicompartmental knee replacement (UKR) has increased in popularity in recent years, especially in young patients with high demands on their athletic ability. To date, there are no data available on the physical activity of young patients following lateral UKR. The aim of this study was to demonstrate return-to-activity rate and sporting activity of patients aged 60 years or younger following lateral UKR with a fixed-bearing (FB) prosthesis. Thirty-seven patients aged 60 years or younger after lateral FB-UKR were included. Sporting activities were assessed using the University of California Lo

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Rajani, Amyn M., Kareena Rajani, Urvil A. Shah, Anmol RS Mittal, Rahul Sheth, and Meenakshi Punamiya. "Pseudoaneurysm of the Lateral Genicular Artery Following Unicompartmental knee Arthroplasty: A Rare Case Report." Journal of Orthopaedic Case Reports 12, no. 8 (2022): 57–60. http://dx.doi.org/10.13107/jocr.2022.v12.i08.2964.

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Introduction: Unicondylar knee replacement is a minimally invasive technique of surface replacement of the knee joint. Very little literature is available regarding vascular complications in patients who undergo this procedure due to their extremely rare nature. Case Report: This first-of-its-kind report describes a case of pseudoaneurysm of the lateral genicular artery of the right knee in a hypertensive, 65-year-old man, following a single sitting bilateral unicompartmental knee replacement (UKR). With no involvement of the lateral compartment in UKR, we suspect an underlying mechanical elem

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Panzram, Benjamin, Mira Mandery, Tobias Reiner, Tobias Gotterbarm, Marcus Schiltenwolf, and Christian Merle. "Cementless Oxford Medial Unicompartmental Knee Replacement—Clinical and Radiological Results of 228 Knees with a Minimum 2-Year Follow-Up." Journal of Clinical Medicine 9, no. 5 (2020): 1476. http://dx.doi.org/10.3390/jcm9051476.

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(1) Background: Studies show several advantages of unicompartmental knee replacement (UKR) over total knee replacements (TKR), whereas registry based revision rates of UKR are significantly higher than for TKA. Registry data report lower revision rates for cementless UKR compared to cemented UKR. The aim of this study was to assess clinical and radiological results of cementless Oxford UKR (OUKR) in an independent cohort. (2) Methods: This retrospective cohort study examines a consecutive series of 228 cementless OUKR. Clinical outcome was measured using functional scores (Oxford Knee Score (O

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Daly, D., and R. Maxwell. "TEN YEARS OF COMBINED ACL RECONSTRUCTION AND UNICOMPARTMENTAL KNEE ARTHROPLASTIES." Orthopaedic Proceedings 105-B, SUPP_2 (2023): 60. http://dx.doi.org/10.1302/1358-992x.2023.2.060.

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The purpose of this study is to assess the long term results of combined ACL reconstruction and unicompartmental knee replacements (UKR). These patients have been selected for this combined operation due to their combination of instability symptoms from an absent ACL and unicompartmental arthritis.Retrospective review of 44 combined UKR and ACL reconstruction by a single surgeon. Surgeries included both medial and lateral UKR combined with either revision ACL reconstruction or primary ACL reconstruction. Patient reported outcomes were obtained preoperatively, at one year, 5 years and 10 years.

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Tang, Bruce Yan Ho, Chi Nok Cheung, Hon For Tsui, and Hok Leung Wong. "Early promising result of bicompartmental knee replacement in middle-aged patients." Journal of Orthopaedics, Trauma and Rehabilitation 26, no. 2 (2019): 85–88. http://dx.doi.org/10.1177/2210491719848758.

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Introduction: Partial knee replacement (PKR) is one of the treatment options in middle-aged patients with less extensive knee osteoarthritis, with unicompartmental knee replacement (UKR) most commonly done for medial osteoarthritis. There are numerous advantages like bone/ligament preserving and faster recovery. However, the indications of UKR remain controversial, as most patients have some patellofemoral joint (PFJ) osteoarthritis. We performed modular bicruciate-retaining bicompartmental knee replacement (BKR) in this group of patients and compared the outcome with total knee replacement (T

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Spinelli, M., S. Affatato, M. K. Harman, and J. D. DesJardins. "Bi-unicondylar knee prosthesis functional assessment utilizing force-control wear testing." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 224, no. 7 (2009): 813–21. http://dx.doi.org/10.1243/09544119jeim726.

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Recent in vivo studies have identified variations in knee prosthesis function depending on prosthesis geometry, kinematic conditions, and the absence/presence of soft-tissue constraints after knee replacement surgery. In particular, unicondylar knee replacements (UKR) are highly sensitive to such variations. However, rigorous descriptions of UKR function through experimental simulation studies, performed under physiological force-controlled conditions, are lacking. The current study evaluated the long-term functional performance of a widely used fixed-bearing unicompartmental knee replacement,

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Mowbray, J., C. Frampton, R. Maxwell, and G. Hooper. "SIXTEEN-YEAR SURVIVAL AND FUNCTIONAL RESULTS OF THE CEMENTLESS OXFORD UNICOMPARTMENTAL KNEE REPLACEMENT." Orthopaedic Proceedings 105-B, SUPP_2 (2023): 95. http://dx.doi.org/10.1302/1358-992x.2023.2.095.

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Cementless fixation is an alternative to cemented unicompartmental knee replacement (UKR), with several advantages over cementation. This study reports on the 15-year survival and 10-year clinical outcomes of the cementless Oxford unicompartmental knee replacement (OUKR).This prospective study describes the clinical outcomes and survival of first 693 consecutive cementless medial OUKRs implanted in New Zealand.The sixteen-year survival was 89.2%, with forty-six knees being revised. The commonest reason for revision was progression of arthritis, which occurred in twenty-three knees, followed by

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Campbell, T., L. Hill, H. Wong, et al. "THE USE OF MRI IN PREOPERATIVE PLANNING FOR MEDIAL UNICOMPARTMENTAL KNEE ARTHROPLASTY." Orthopaedic Proceedings 105-B, SUPP_3 (2023): 102. http://dx.doi.org/10.1302/1358-992x.2023.3.102.

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Contemporary indications for unicompartmental knee replacement (UKR) include bone on bone radiographic changes in the medial compartment with relatively preserved lateral and patellofemoral compartments. The role of MRI in identifying candidates for UKR is commonplace. The aim of this study was to assess the relationship between radiographic and MRI pre-operative grade and outcome following UKR.A retrospective analysis of medial UKR patients from 2017 to 2021. Inclusion criteria were medial UKR for osteoarthritis with pre-operative and post-operative Oxford Knee Scores (OKS), pre-operative rad

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Legnani, Claudio, Andrea Parente, Franco Parente, and Alberto Ventura. "Medial unicompartmental knee replacement is a viable treatment option after failed high tibial osteotomy: a systematic review." EFORT Open Reviews 7, no. 8 (2022): 569–75. http://dx.doi.org/10.1530/eor-21-0133.

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Purpose It is debatable whether or not previous high tibial osteotomy (HTO) has negative effects on the results of subsequent medial unicompartmental knee replacement (UKR). The purpose of this study is to report, through a systematic review of the literature, the outcomes of medial UKR after failed HTO. It was hypothesized that this procedure would be safe and effective in providing satisfactory postoperative functional outcomes. Methods A systematic review was performed by searching Pubmed/MEDLINE, Embase and CINAHL. Only studies in English pertaining to all levels of evidence reporting on s

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Asma, Ali, Mehmet Erduran, and Musa Eymir. "An Unusual Presentation of Insert Dislocation and MCL Rupture in Unicompartmental Knee Replacement with 2 Years Postoperative Results: Does It Functional?" Case Reports in Orthopedics 2019 (May 14, 2019): 1–5. http://dx.doi.org/10.1155/2019/2634738.

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According to our knowledge, there is no prior article that reports functional results of medial collateral ligament (MCL) primary repair and insert change after MCL rupture and mobile-bearing dislocation as a late complication of unicompartmental knee replacement (UKR). Firstly, 63-year-old woman was treated with UKR due to anteromedial knee osteoarthritis of the right knee joint. 1 year after UKR surgery, she suffered from MCL rupture and mobile-bearing dislocation because of falls while getting on a public bus, and therefore, secondly, she was operated with MCL primary repair and mobile-bear

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Hefny, Mamdouh H., Nick A. Smith, and Jon Waite. "Cemented Lateral Unicompartmental Knee Replacement: A retrospective single centre independent series." Journal of Orthopaedics, Trauma and Rehabilitation 29, no. 1 (2022): 221049172210758. http://dx.doi.org/10.1177/22104917221075822.

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Background Unicompartmental knee replacement (UKR) has functional and economic benefits when compared with total knee replacement, however it is technically demanding and may be associated with higher failure rates. The primary aim of this independent series study was to evaluate the survival of lateral UKRs implanted in our institution and their clinical outcomes. The secondary outcome was to compare the results of mobile and fixed-bearing prostheses. Methods This is a retrospective series study of 183 cemented lateral UKRs implanted in 170 patients, for advanced isolated lateral compartment

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Panzram, Benjamin, Frederik Barbian, Tobias Reiner, Mustafa Hariri, Tobias Renkawitz, and Tilman Walker. "Clinical and Functional Results of Cementless Unicompartmental Knee Arthroplasty with a Minimum Follow Up of 5 Years—A Consecutive Cohort of 201 Patients." Journal of Clinical Medicine 12, no. 4 (2023): 1694. http://dx.doi.org/10.3390/jcm12041694.

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The number of unicompartmental knee replacements (UKR) is increasing. Alongside various advantages, the revision rate of cemented UKR is higher compared to total knee arthroplasty (TKR). In contrast, cementless fixation shows reduced revision rates, compared to the cemented UKR. However, most of the recent literature is based on designer-dependent studies. In this retrospective, single-center cohort study, we investigated patients who underwent cementless Oxford UKR (OUKR) between 2012 and 2016 in our hospital with a minimum follow-up of five years. Clinical outcome was evaluated using the OKS

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Fowler, Timothy J., Alex L. Aquilina, Ashley W. Blom, Adrian Sayers, and Michael R. Whitehouse. "Association between surgeon grade and implant survival following hip and knee replacement: a systematic review and meta-analysis." BMJ Open 11, no. 11 (2021): e047882. http://dx.doi.org/10.1136/bmjopen-2020-047882.

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ObjectiveTo investigate the association between surgeon grade (trainee vs consultant) and implant survival following primary hip and knee replacement.DesignA systematic review and meta-analysis of observational studies.Data sourcesMEDLINE and Embase from inception to 6 October 2021.SettingUnits performing primary hip and/or knee replacements since 1990.ParticipantsAdult patients undergoing either a primary hip or knee replacement, predominantly for osteoarthritis.InterventionWhether the surgeon recorded as performing the procedure was a trainee or not.Primary and secondary outcome measuresThe

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Kennedy, James A., Jeya Palan, Stephen J. Mellon, et al. "Most unicompartmental knee replacement revisions could be avoided: a radiographic evaluation of revised Oxford knees in the National Joint Registry." Knee Surgery, Sports Traumatology, Arthroscopy 28, no. 12 (2020): 3926–34. http://dx.doi.org/10.1007/s00167-020-05861-5.

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Abstract Purpose The purpose of this study was to understand why the revision rate of unicompartmental knee replacement (UKR) in the National Joint Registry (NJR) is so high. Using radiographs, the appropriateness of patient selection for primary surgery, surgical technique, and indications for revision were determined. In addition, the alignment of the radiographs was assessed. Methods Oxford UKR registered with the NJR between 2006 and 2010 and subsequently revised were identified by the NJR. A blinded review was undertaken of pre-primary, post-primary, and pre-revision anteroposterior and l

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Vashisht, Arun, Gaurav Menwal, and Rachit Bhatnagar. "A clinico-radiological evaluation of functional outcome of proximal fibular osteotomy for medial compartment knee osteoarthritis: a new emerging technique." International Journal of Research in Orthopaedics 6, no. 3 (2020): 515. http://dx.doi.org/10.18203/issn.2455-4510.intjresorthop20201725.

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<p class="abstract"><strong>Background:</strong> The medial compartmental osteoarthritis (OA) knee is initially treated conservatively followed by lateral close/open medial wedge high tibial osteotomy (HTO), or by unicompartmental or total knee replacement (UKR/TKR). Though HTO and UKR/TKR yield good results but are technically more demanding and are fraught with risk of complications, moreover replacement may not be the treatment of choice for younger patients. The objective of this study was to evaluate the efficacy of proximal fibular osteotomy (PFO), a minimally invasive

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Mohammad, Hasan R., Andrew Judge, and David W. Murray. "A matched comparison of cementless unicompartmental and total knee replacement outcomes based on the National Joint Registry for England, Wales, Northern Ireland and the Isle of Man." Acta Orthopaedica 93 (May 24, 2022): 478–87. http://dx.doi.org/10.2340/17453674.2022.2743.

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Background and purpose: The main treatments for severe medial compartment knee arthritis are unicompartmental (UKR) and total knee replacement (TKR). UKRs have higher revision rates, particularly for aseptic loosening, therefore the cementless version was introduced. We compared the outcomes of matched cementless UKRs and TKRs.Patients and methods: The National Joint Registry was linked to the English Hospital Episode Statistics and Patient Reported Outcome Measures (PROMs) databases. 10,552 cementless UKRs and 10,552 TKRs were propensity matched and regression analysis used to compare revisio

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Koh, Yong-Gon, Hyoung-Taek Hong, and Kyoung-Tak Kang. "Biomechanical Effect of UHMWPE and CFR-PEEK Insert on Tibial Component in Unicompartmental Knee Replacement in Different Varus and Valgus Alignments." Materials 12, no. 20 (2019): 3345. http://dx.doi.org/10.3390/ma12203345.

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The current study aims to analyze the biomechanical effects of ultra-high molecular weight polyethylene (UHMWPE) and carbon-fiber-reinforced polyetheretherketone (CFR-PEEK) inserts, in varus/valgus alignment, for a tibial component, from 9° varus to 9° valgus, in unicompartmental knee replacement (UKR). The effects on bone stress, collateral ligament force, and contact stress on other compartments were evaluated under gait cycle conditions, by using a validated finite element model. In the UHMWPE model, the von Mises’ stress on the cortical bone region significantly increased as the tibial tra

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Gregor, R. H., G. J. Hooper, and C. M. A. Frampton. "FIVE- AND TEN-YEAR FOLLOW-UP OF UNICOMPARTMENTAL KNEE ARTHROPLASTIES IN OBESE PATIENTS." Orthopaedic Proceedings 105-B, SUPP_3 (2023): 53. http://dx.doi.org/10.1302/1358-992x.2023.3.053.

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Due to shorter hospital stays and faster patient rehabilitation Unicompartmental Knee Replacements (UKR) are now considered more cost effective than Total Knee Joint Replacements (TKJR). Obesity however, has long been thought of as a relative contraindication to UKR due to an unproven theoretical concern of early loosening.This study is a retrospective review of patient reported outcome scores and revision rates of all UKR with recorded BMI performed by the Canterbury District Health Board (CDHB) from January 2011 and September 2021. Patient reported outcome scores were taken preoperatively, a

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Plate, Johannes F., Ali Mofidi, Sandeep Mannava, et al. "Achieving Accurate Ligament Balancing Using Robotic-Assisted Unicompartmental Knee Arthroplasty." Advances in Orthopedics 2013 (2013): 1–6. http://dx.doi.org/10.1155/2013/837167.

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Unicompartmental knee arthroplasty (UKA) allows replacement of a single compartment in patients with limited disease. However, UKA is technically challenging and relies on accurate component positioning and restoration of natural knee kinematics. This study examined the accuracy of dynamic, real-time ligament balancing using a robotic-assisted UKA system. Surgical data obtained from the computer system were prospectively collected from 51 patients (52 knees) undergoing robotic-assisted medial UKA by a single surgeon. Dynamic ligament balancing of the knee was obtained under valgus stress prior

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He, Yong, Lianbo Xiao, Weitao Zhai, Maximilian F. Kasparek, Guilin Ouyang, and Friedrich Boettner. "What Percentage of Patients is a Candidate for Unicompartmental Knee Replacement at a Chinese Arthroplasty Center?" Open Orthopaedics Journal 12, no. 1 (2018): 17–23. http://dx.doi.org/10.2174/1874325001812010017.

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Background:Data on indication of Unicompartmental Knee Arthroplasty (UKA) in the Asian population are currently not available. The current paper evaluates patients undergoing knee replacement at a Chinese Orthopaedic Specialty Hospital to report the percentage of patients who meet radiographic and clinical indication criteria for UKA.Methods:Over a one-year period 463 consecutive patients (515 knees) underwent primary knee replacement surgery. Clinical data were recorded and preoperative radiographs were assessed. Patients were classified as suitable candidates for UKA based on the degree of d

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Vasso, Michele, Katia Corona, Rocco D'Apolito, Giuseppe Mazzitelli, and Alfredo Panni. "Unicompartmental Knee Arthroplasty: Modes of Failure and Conversion to Total Knee Arthroplasty." Joints 05, no. 01 (2017): 044–50. http://dx.doi.org/10.1055/s-0037-1601414.

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AbstractDespite the excellent success rates of the modern unicompartmental knee arthroplasty (UKA), results of knee replacement registries still shows a relatively high revision and failure rate for UKA, especially when compared with traditional total knee arthroplasty (TKA). Bearing dislocation continues to be advocated as the predominant mechanism of failure in mobile UKA, whereas polyethylene wear and aseptic loosening remains the main cause of failure of fixed UKA. Degeneration of the unreplaced compartments has been reported in both mobile and fixed designs. When the revision is required,

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Hou, Yingzhou, Shaohua Wang, and Aiguo Wang. "Effect of unicompartmental knee arthroplasty and high tibial osteotomy with tomofix internal fixation in the treatment of unicompartmental knee osteoarthritis." Orthopaedic Journal of Sports Medicine 8, no. 9_suppl7 (2020): 2325967120S0054. http://dx.doi.org/10.1177/2325967120s00541.

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Introduction: Knee osteoarthritis is a common degenerative disease in the elderly clinically. Cartilage damage, osteophyte formation, joint space narrowing and bone exposure are the main pathological changes, mainly manifested as joint cartilage degeneration [1]. Since the knee joint load of normal people is mainly conducted through the medial side of the knee joint, it is easy to cause degeneration of the medial compartment and then narrow the joint space, which leads to the medial deviation of the lower limb line and the varus deformity of the knee joint. For patients aged 55-65 years with u

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Malhotra, Rajesh, Sahil Gaba, Vijay Kumar, Deep Srivastava, Hemant Pandit, and Naman Wahal. "Femoral Component Sizing in Oxford Unicompartmental Knee Replacement: Existing Guidelines Do Not Work for Indian Patients." Journal of Knee Surgery 32, no. 03 (2018): 205–10. http://dx.doi.org/10.1055/s-0038-1635113.

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AbstractOxford unicompartmental knee replacement (OUKR) has shown excellent long-term clinical outcomes as well as implant survival when used for correct indications with optimal surgical technique. Anteromedial osteoarthritis is highly prevalent in Indian patients, and OUKR is the ideal treatment option in such cases. Uncertainty prevails about the best method to determine femoral component size in OUKR. Preoperative templating has been shown to be inaccurate, while height- and gender-based guidelines based on European population might not apply to the Indian patients. Microplasty instrumenta

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Campi, Stefano, Giuseppe Francesco Papalia, Carlo Esposito, et al. "Unicompartmental Knee Replacement in Obese Patients: A Systematic Review and Meta-Analysis." Journal of Clinical Medicine 10, no. 16 (2021): 3594. http://dx.doi.org/10.3390/jcm10163594.

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Thanks to modern surgical techniques and implants, traditional exclusion criteria for unicompartmental knee arthroplasty (UKA) are no longer considered contraindications. The aim of this study is to clarify the impact of obesity on functional outcomes and revision rates of UKA. We performed a comprehensive systematic review using PubMed–Medline, Google Scholar and Cochrane Central. Then, we extracted data related to body mass index (BMI), age and follow-up, functional outcome scores and rate of revisions (all-cause, aseptic and septic). Patients were stratified according to BMI into two groups

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Holz, Johannes, Stefan Schneider, Ansgar Ilg, and Rene Kaiser. "Bicompartmental Knee Arthroplasty (BKA) in comparison to unicompartmental (UKA), Patellofemoral (PFA) ans total knee arthroplasty (TKA) – Early Clinical Results." Orthopaedic Journal of Sports Medicine 7, no. 6_suppl4 (2019): 2325967119S0023. http://dx.doi.org/10.1177/2325967119s00234.

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Aims and Objectives: The purpose was to evaluate the clinical outcomes of patients with knee osteoarthritis treated with bicompartmental arthroplasty (BKA) in comparison to unicompartmental (UKA), patellofemoral (PFA) and total knee arthroplasty (TKA) in a single center. Materials and Methods: This is a prospective study analyzing a consecutive series of 396 patients from two surgeons in a single center. In 191 men and 205 women either partial or total knee replacement were performed. Their mean age at surgery was 63±6,85 years and mean BMI 29,55±5,00 kg/m2. In 238 patients UKA, in 125 TKA, in

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Zhang, Dahua, and Xiang Zhang. "Safety and Efficacy of Unicondylar Knee Prosthesis Treatment for Unicompartmental Osteoarthritis of the Knee Joint." Computational and Mathematical Methods in Medicine 2022 (July 15, 2022): 1–9. http://dx.doi.org/10.1155/2022/2938380.

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Background. Knee osteoarthritis (KOA) is a chronic disease that seriously endangers the health of the elderly. Choosing appropriate surgery for knee osteoarthritis patients is especially important. Objective. To investigate the safety and efficacy of unicondylar knee prosthesis treatment for unicompartmental osteoarthritis of the knee. Materials and Methods. One hundred patients with unicondylar osteoarthritis of the knee treated in our hospital from June 2019 to June 2021 were selected as retrospective study subjects and were divided into 50 cases each in the comparison group and the observat

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Wenzhong, Chen, Zou Shiping, and Siwen Teng. "Influence of preoperative weight on the early and middle outcome of fixed platform medial unicompartmental knee arthroplasty." Orthopaedic Journal of Sports Medicine 8, no. 9_suppl7 (2020): 2325967120S0054. http://dx.doi.org/10.1177/2325967120s00540.

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Introduction: Obesity is an important independent risk factor for the development of knee osteoarthritis .According to the data of the world Health Organization, there were more than 1.9 billion overweight adults in the world in 2014, among which at least 600 million were clinically obese .Therefore, among the patients undergoing knee replacement, the number of obese patients is increasing .The use of single condyle replacement for medial compartment arthritis of the knee began in the 1970s.With the continuous development of new implants, the continuous improvement of surgical techniques and t

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Abdulkarim, Ali, Turlough O'Donnell, and Michael Neil. "The influence of patellofemoral degenerative changes on the outcome of unicompartmental knee replacement (UKA)." International Journal of Surgery 11, no. 8 (2013): 661. http://dx.doi.org/10.1016/j.ijsu.2013.06.401.

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Cammisa, Eugenio, Iacopo Sassoli, Matteo La Verde, et al. "Bilateral Knee Arthroplasty in Patients Affected by Windswept Deformity: A Systematic Review." Journal of Clinical Medicine 11, no. 21 (2022): 6580. http://dx.doi.org/10.3390/jcm11216580.

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Background: “Windswept” deformity (WSD) consists of a non-frequent condition in which the patient presents a valgus deformity in one knee and a varus deformity in the other. We performed a review of the available literature to aggregate the accessible data on the outcomes of bilateral knee arthroplasty in patients with WSD and to discuss the surgical challenges that this condition might pose. Methods: A systematic review of the literature following the PRISMA guidelines was conducted. The relevant studies between 1979 and 2021 were identified. Four studies with a total of 68 patients were incl

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Carli, Alberto V., Milan Kapadia, Yu-fen Chiu, Michael Henry, and Andy O. Miller. "399. Treatment and Outcome of Prosthetic Joint Infection in Unicompartmental Knee Arthroplasty." Open Forum Infectious Diseases 6, Supplement_2 (2019): S204. http://dx.doi.org/10.1093/ofid/ofz360.472.

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Abstract Background Unicompartmental knee arthroplasty (UKA) is an increasingly popular alternative to total knee replacement due to easier recovery and greater satisfaction. However, limited evidence guides the management of periprosthetic joint infection (PJI) in UKA specifically. We retrospectively reviewed the largest cohort of UKA PJI to date, providing our experience in a high volume tertiary institution. Methods An institutional PJI database was queried from 2008 to 2016 to identify all PJI cases with an index procedure of UKA. Treatment, diagnostic criteria, Charlson Comorbidity Index

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Burger, Joost A., Matthew S. Dooley, Laura J. Kleeblad, Hendrik A. Zuiderbaan, and Andrew D. Pearle. "What is the impact of patellofemoral joint degeneration and malalignment on patient-reported outcomes after lateral unicompartmental knee arthroplasty?" Bone & Joint Journal 102-B, no. 6 (2020): 727–35. http://dx.doi.org/10.1302/0301-620x.102b6.bjj-2019-1429.r1.

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Aims It remains controversial whether patellofemoral joint pathology is a contraindication to lateral unicompartmental knee arthroplasty (UKA). This study aimed to evaluate the effect of preoperative radiological degenerative changes and alignment on patient-reported outcome scores (PROMs) after lateral UKA. Secondarily, the influence of lateral UKA on the alignment of the patellofemoral joint was studied. Methods A consecutive series of patients who underwent robotic arm-assisted fixed-bearing lateral UKA with at least two-year follow-up were retrospectively reviewed. Radiological evaluation

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IMRAN, AHMED. "SAGITTAL PLANE KNEE LAXITY AFTER LIGAMENT RETAINING UNCONSTRAINED ARTHROPLASTY: A MATHEMATICAL ANALYSIS." Journal of Mechanics in Medicine and Biology 12, no. 02 (2012): 1240002. http://dx.doi.org/10.1142/s0219519412400027.

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Passive knee laxity is an important clinical measure to assess function after joint replacement. Clinical observations suggest that the use of minimally invasive surgical techniques in knee arthroplasty may affect the surgeon's ability to orient and position the prosthetic components accurately. Further, recent studies suggest that malplaced prosthetic components in ligament retaining unconstrained unicompartmental knee arthroplasty (UKA) can affect the ligament forces and, hence, the knee laxity. In the present study, a sagittal plane mathematical model of the knee with intact ligaments and u

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Pisanu, Gabriele, Federica Rosso, Corrado Bertolo, et al. "Patellofemoral Arthroplasty: Current Concepts and Review of the Literature." Joints 05, no. 04 (2017): 237–45. http://dx.doi.org/10.1055/s-0037-1606618.

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AbstractPatellofemoral osteoarthritis (PFOA) can be associated with anterior knee pain, stiffness, and functional impairment. Some authors report that PFOA affects approximately 9% of patients older than 40 years with a greater prevalence in females. Etiology of PFOA is multifactorial and is related to the presence of abnormal stresses at the PF joint due to knee- and patient-related factors. The need for a joint preserving treatment by isolated replacement of the injured compartment of the knee led to the development of PF arthroplasty (PFA). When a correct PF replacement is performed, PFA pr

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Yun, Andrew G., Marilena Qutami, and Kory B. Dylan Pasko. "Modified Two-Stage Exchange for Periprosthetic Joint Infection in UKA." Case Reports in Orthopedics 2020 (August 17, 2020): 1–6. http://dx.doi.org/10.1155/2020/8860433.

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Periprosthetic joint infection (PJI) is a rare complication following unicompartmental knee arthroplasty (UKA), and current management guidelines are still evolving. This report presents a novel surgical technique of resection arthroplasty with an articulated hemispacer as part of a 2-stage exchange protocol. A 66-year-old man developed a culture-negative PJI four months after a medial UKA. Rather than conventional full resection arthroplasty, the patient underwent partial resection with preservation of the lateral and patellofemoral compartments to maintain vascularized bone stock. An articul

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Zhang, Chaofan, Yongbin Li, Yunzhi Lin, et al. "Joint Replacement Surgeries Can Be Safely Performed in HIV Patients." Journal of Clinical Medicine 12, no. 1 (2022): 293. http://dx.doi.org/10.3390/jcm12010293.

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Whether joint replacement surgery can be performed safely on HIV patients is still a matter of debate. This study aimed to report the surgical efficacy and complications of joint replacement surgery in HIV patients. A total of 21 HIV patients and 27 non-HIV patients who underwent arthroplasties in our hospital were retrospectively reviewed. The 21 HIV patients received 29 joint replacement surgeries including 27 cases of total hip arthroplasty (THA) and 2 cases of total knee arthroplasty (TKA). The non-HIV patients received 16 THA, 10 TKA, and 3 unicompartmental arthroplasty (UKA). The length

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Crizer, Meredith P., Amer Haffar, Andrew Battenberg, Mikayla McGrath, Ryan Sutton, and Jess H. Lonner. "Robotic Assistance in Unicompartmental Knee Arthroplasty Results in Superior Early Functional Recovery and Is More Likely to Meet Patient Expectations." Advances in Orthopedics 2021 (July 14, 2021): 1–8. http://dx.doi.org/10.1155/2021/4770960.

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Robotic technology has reduced the errors of implant alignment in unicompartmental knee arthroplasty (UKA), but its impact on functional recovery after UKA is poorly defined. The purpose of this study was to compare early functional recovery, pain levels, and satisfaction in UKA performed with either robotic assistance or conventional methods. A retrospective analysis was performed on 89 matched consecutive patients who underwent outpatient UKA by a single physician using either conventional instruments (n = 39) or robotic methods (n = 50), with otherwise identical perioperative protocols. Out

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Weber, Patrick, Matthias Woiczinski, Arnd Steinbrück, et al. "Increase in the Tibial Slope in Unicondylar Knee Replacement: Analysis of the Effect on the Kinematics and Ligaments in a Weight-Bearing Finite Element Model." BioMed Research International 2018 (July 5, 2018): 1–9. http://dx.doi.org/10.1155/2018/8743604.

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Introduction. Unicompartmental arthroplasty (UKA) of the knee in patients with isolated medial osteoarthritis yields adequate results; however, the survival rate is inferior to that of total knee arthroplasty (TKA). A key factor in the longevity of the implant is the positioning; however, the optimal tibial slope in UKA has not been determined. The aim of this study was to establish a finite element (FE) model and investigate the effect of the tibial slope on the strain of the ligaments, kinematics, inlay movement, and load in the nonreplaced patellofemoral compartment in a medial mobile beari

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Burger, Joost A., Laura J. Kleeblad, Niels Laas, and Andrew D. Pearle. "Mid-term survivorship and patient-reported outcomes of robotic-arm assisted partial knee arthroplasty." Bone & Joint Journal 102-B, no. 1 (2020): 108–16. http://dx.doi.org/10.1302/0301-620x.102b1.bjj-2019-0510.r1.

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Aims Limited evidence is available on mid-term outcomes of robotic-arm assisted (RA) partial knee arthroplasty (PKA). Therefore, the purpose of this study was to evaluate mid-term survivorship, modes of failure, and patient-reported outcomes of RA PKA. Methods A retrospective review of patients who underwent RA PKA between June 2007 and August 2016 was performed. Patients received a fixed-bearing medial or lateral unicompartmental knee arthroplasty (UKA), patellofemoral arthroplasty (PFA), or bicompartmental knee arthroplasty (BiKA; PFA plus medial UKA). All patients completed a questionnaire

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Feltri, Pietro, Camilla Mondini Trissino da Lodi, Alberto Grassi, Stefano Zaffagnini, Christian Candrian, and Giuseppe Filardo. "One-stage bilateral unicompartmental knee arthroplasty is a suitable option vs. the two-stage approach: a meta-analysis." EFORT Open Reviews 6, no. 11 (2021): 1063–72. http://dx.doi.org/10.1302/2058-5241.6.210047.

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To compare one-stage vs. two-stage bilateral unicondylar knee arthroplasty (UKA) in terms of complications, mortality, reinterventions, transfusion rate, days to discharge, and outcomes for the treatment of bilateral mono-compartmental knee osteoarthritis. A systematic review was performed in the PubMed, Web of Science, and Cochrane databases up to February 2021. Randomized controlled trials, case-control studies, and case series describing the use of bilateral UKA were retrieved. A meta-analysis was performed on complications, mortality, reinterventions, transfusion rate, and days to discharg

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Holz, Johannes, Stefan Schneider, Nils Hansen-Algenstaedt, Rene Kaiser, and Ansgar Ilg. "A Selective arthroplasty algorithm contributes to clinical outcome and patient satisfaction in patients with osteoarthritis of the knee." Orthopaedic Journal of Sports Medicine 8, no. 5_suppl4 (2020): 2325967120S0032. http://dx.doi.org/10.1177/2325967120s00323.

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Aims and Objectives: The purpose was to evaluate the clinical outcomes and patient satisfaction of patients with knee osteoarthritis treated within a selective arthroplasty algorithm, using focal metal implants (FMI), unicompartmental (UKA), patellofemoral (PFA), bicompartimental (BKA) and total knee arthroplasty (TKA) in a single center. Materials and Methods: This is a prospective study analyzing a consecutive series of 613 patients treated by two surgeons in a single center. In 283 men and 330 women either partial or total knee replacement were performed. Their mean age at surgery was 63±6,

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Moretti, Lorenzo, Michele Coviello, Federica Rosso, et al. "Current Trends in Knee Arthroplasty: Are Italian Surgeons Doing What Is Expected?" Medicina 58, no. 9 (2022): 1164. http://dx.doi.org/10.3390/medicina58091164.

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Objectives: The purpose of this study is to evaluate Italian surgeons’ behavior during knee arthroplasty. Materials and Methods: All orthopedic surgeons who specialized in knee replacement surgeries and were members of the Italian Society of Knee, Arthroscopy, Sport, Cartilage and Orthopedic Technologies (SIGASCOT) between January 2019 and August 2019 were asked to complete a survey on the management of knee arthroplasty. Data were collected, analyzed, and presented as frequencies and percentages. Results: One-hundred and seventy-seven surgeons completed the survey and were included in the stu

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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 (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 osteoarthrit

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Zaidi, F., S. M. Bolam, T. C. Yeung, et al. "REMOTE EVALUATION OF POSTOPERATIVE OUTCOMES USING WEARABLE SENSORS COMPARING ROBOTIC-ASSISTED AND CONVENTIONAL KNEE ARTHROPLASTY." Orthopaedic Proceedings 105-B, SUPP_2 (2023): 68. http://dx.doi.org/10.1302/1358-992x.2023.2.068.

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Patient-reported outcome measures (PROMs) have failed to highlight differences in function or outcome when comparing knee replacement designs and implantation techniques. Ankle-worn inertial measurement units (IMUs) can be used to remotely measure and monitor the bi-lateral impact load of patients, augmenting traditional PROMs with objective data. The aim of this study was to compare IMU-based impact loads with PROMs in patients who had undergone conventional total knee arthroplasty (TKA), unicompartmental knee arthroplasty (UKA), and robotic-assisted TKA (RA-TKA).77 patients undergoing primar

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Schneider, Brandon L., Daphne I. Ling, Laura J. Kleebad, Sabrina Strickland, and Andrew Pearle. "Comparing Return to Sports After Patellofemoral and Knee Arthroplasty in an Age- and Sex-Matched Cohort." Orthopaedic Journal of Sports Medicine 8, no. 10 (2020): 232596712095742. http://dx.doi.org/10.1177/2325967120957425.

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Background: Return to sports is an important outcome in ensuring patient satisfaction after knee-replacement surgery. However, few studies have directly compared unicompartmental knee arthroplasty (UKA), total knee arthroplasty (TKA), and patellofemoral arthroplasty (PFA). Hypothesis: TKA will result in lower rates of return to sports than either UKA and PFA due to increased complexity and invasiveness. Study Design: Cohort study; Level of evidence, 3. Methods: Patients who underwent UKA, TKA, or PFA with 1 to 2 years of follow-up were sent a questionnaire regarding return to sports, satisfact

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Mouli, Vibav H., Christopher X. Carrera, Natalie Schudrowitz, Jean Flanagan Jay, Vivek Shah, and Wolfgang Fitz. "Post-Operative Remote Monitoring for Same-Day Discharge Elective Orthopedic Surgery: A Pilot Study." Sensors 21, no. 17 (2021): 5754. http://dx.doi.org/10.3390/s21175754.

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The purposes of this pilot study are to utilize digital remote monitoring to (a) evaluate the usability and satisfaction of a wireless blood pressure (BP) and heart rate (HR) monitor and (b) determine whether these data can enable safe mobilization at home after same-day discharge (SDD) joint replacement. A population of 23 SDD patients undergoing unicompartmental knee arthroplasty (UKA), total knee arthroplasty (TKA), or total hip arthroplasty (THA) were given a cellular BP/HR monitor, with real-time data capture. Patients took three readings after surgery, observing for specific blood pressu

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Scholes, Corey, Milad Ebrahimi, Nalan Ektas, and John Ireland. "Efficacy of a Second-Generation Rotating Bearing Tibial Platform in Total Knee Arthroplasty: A Prospective Observational Cohort Study with Registry Analysis." Journal of Knee Surgery 33, no. 05 (2019): 513–24. http://dx.doi.org/10.1055/s-0039-1678679.

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AbstractThere is a lack of clinical outcomes reported for the rotating bearing knee (RBK) total knee arthroplasty (TKA), which is a second-generation rotating platform knee, with purported benefits over earlier versions. The purpose of the study was to report the complications, short-term (minimum 1 year) patient-reported outcomes and long-term (up to 15 years) procedure survival in a consecutive series of patients receiving a rotating platform TKA (RBK) from an independent clinic. A retrospective analysis of a single-surgeon, private/public practice, with prospectively collected data in a sub

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Gaudiani, Michael A., Linsen T. Samuel, John N. Diana, et al. "5-Year Survivorship and Outcomes of Robotic-Arm-Assisted Medial Unicompartmental Knee Arthroplasty." Applied Bionics and Biomechanics 2022 (May 6, 2022): 1–5. http://dx.doi.org/10.1155/2022/8995358.

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Purpose. While unicompartmental knee arthroplasty (UKA) has demonstrated benefits over total knee arthroplasty (TKA) in selected populations, component placement continues to be challenging with conventional surgical instruments, resulting in higher early failure rates. Robotic-arm-assisted UKA (RA-UKA) has shown to be successful in component positioning through preop planning and intraop adjustability. The purpose of this study is to assess the 5-year clinical outcomes of medial RA-UKA. Methods. This study was a retrospective review of a single-center prospectively maintained cohort of 133 pa

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