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Journal articles on the topic 'Ankle'

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1

Saiga, Kenta, Suguru Yokoo, Hideki Ohashi, Masahiro Horita, Takayuki Furumatsu, and Toshifumi Ozaki. "Effect of Lateral Gutter Osteophyte Resection on Correction of Varus Deformity in Arthroscopic Ankle Arthrodesis." Foot & Ankle International 41, no. 6 (2020): 683–88. http://dx.doi.org/10.1177/1071100720910388.

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Background: Recently, arthroscopic ankle arthrodesis has been performed for moderate-to-severe varus-deformed ankle osteoarthritis. However, the effect of osteophyte resection in the lateral gutter in arthroscopic ankle arthrodesis has not been clarified. We hypothesized that a varus-deviated ankle with lateral gutter osteophytes can be corrected by osteophyte resection. Methods: Thirty-nine ankles of 38 patients were included. The mean age of patients was 70.0 (45-83) years. The patients were divided into the following groups: group with an osteophyte in the lateral gutter (osteophyte) and gr
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2

Lim, Jung-Won, Hong-Geun Jung, and Jemin Im. "Comparison of the Outcome of the 3-Component Salto Total Ankle Arthroplasty for Ankle with Preoperative Varus, Valgus and Neutral Alignment in End-Stage Osteoarthritis." Foot & Ankle Orthopaedics 7, no. 1 (2022): 2473011421S0031. http://dx.doi.org/10.1177/2473011421s00319.

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Category: Ankle; Ankle Arthritis Introduction/Purpose: As the popularity of total ankle arthroplasty (TAA) increases, indication of TAA also expands. Recently, the ankles more than 20° of varus or valgus deformity in the coronal plane are treated with TAA. However, severe varus or valgus deformity should be corrected in the coronal plane to avoid residual mal-alignment that leads to instability, insert wear, and clinical failure. In this study, we compare the clinical and radiologic outcome of the Salto mobile bearing 3-component total ankle prosthesis for ankles with preoperative varus, neutr
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Kvarda, Peter, Lena Siegler, Tamar Horn-Lang, Roman Susdorf, Roxa Ruiz, and Beat Hintermann. "3D Analysis of the Hindfoot Following Total Ankle Replacement for Varus Ankle Osteoarthritis." Foot & Ankle Orthopaedics 7, no. 4 (2022): 2473011421S0073. http://dx.doi.org/10.1177/2473011421s00736.

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Category: Hindfoot; Ankle; Ankle Arthritis Introduction/Purpose: In advanced stages of varus ankle osteoarthritis (OA) progressive destabilization of the peritalar structures is common. Total ankle replacement (TAR) is a viable treatment option although data, particularly on changes in the subtalar joint position following TAR, is scarce. Therefore, we evaluated the subtalar joint using semi-automated measurements based on weightbearing cone-beam CT scans (WBCT) before and after TAR. Methods: 14 patients (15 ankles) who received TAR without additional bony procedures for varus ankle OA were an
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Lee, Seung Yeol, Soon-Sun Kwon, Moon Seok Park, et al. "Is there a Relationship between Bone Morphology and Injured Ligament on Imaging Studies and Laxity on Ankle Stress Radiographs?" Foot & Ankle Orthopaedics 2, no. 3 (2017): 2473011417S0002. http://dx.doi.org/10.1177/2473011417s000259.

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Category: Ankle, Sports Introduction/Purpose: We hypothesized that the bony configuration of the ankle could also be associated with ankle stress radiographs, in addition to ligament injury of the ankle. Therefore, this study aimed to investigate the relationship between bone morphology and injured ligament on imaging studies and laxity on ankle stress radiographs in patients with lateral ankle instability. Methods: In total, 115 patients who had undergone ankle MRI, ankle radiography, and stress radiography were included. Distal tibial articular surface angle, bimalleolar tilt, medial and lat
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Piga, Camilo, Federico Giuseppe Usuelli, Camilla Maccario, and Claudia A. Di Silvestri. "Total Ankle Arthroplasty in Valgus Deformity." Foot & Ankle Orthopaedics 5, no. 4 (2020): 2473011420S0038. http://dx.doi.org/10.1177/2473011420s00386.

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Category: Ankle Arthritis Introduction/Purpose: Total ankle replacement use has increased among patients with end-stage ankle arthritis. Substantial coronal plane deformity is usual in that context. In addition, recent literature shows a trend towards the extension of the indication of total ankle arthroplasty in increasingly severe coronal deformities, showing good results when correct alignment is achieved. Nevertheless, the results of lateral transfibular total ankle replacement (LTTAR) in valgus has not been extensively studied. We aimed to evaluate if the outcomes of LTTAR in ankles with
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6

Gougoulias, Nikolaos E., Filon G. Agathangelidis, and Stephen W. Parsons. "Arthroscopic Ankle Arthrodesis." Foot & Ankle International 28, no. 6 (2007): 695–706. http://dx.doi.org/10.3113/fai.2007.0695.

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Background: Arthroscopic arthrodesis has been used mainly for in situ fusion of arthritic ankles without deformity. This paper presents the application of arthroscopic arthrodesis of ankles with marked deformity. Methods: The results of 78 consecutive cases of arthroscopic ankle arthrodeses, performed in 74 patients, were retrospectively evaluated. Forty-eight ankles had minor deformity (group A), whereas 30 ankles had a varus or valgus deformity of more than 15 degrees (maximum 45 degrees) (group B). The average hospital stay was 3.8 and 3.4 days in groups A and B, respectively ( p = 0.74). P
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7

Witchalls, Jeremy, Gordon Waddington, Peter Blanch, and Roger Adams. "Ankle Instability Effects on Joint Position Sense When Stepping Across the Active Movement Extent Discrimination Apparatus." Journal of Athletic Training 47, no. 6 (2012): 627–34. http://dx.doi.org/10.4085/1062-6050-47.6.12.

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Context Individuals with and without functional ankle instability have been tested for deficits in lower limb proprioception with varied results. Objective To determine whether a new protocol for testing participants' joint position sense during stepping is reliable and can detect differences between participants with unstable and stable ankles. Design Descriptive laboratory study. Setting University clinical laboratory. Patients or Other Participants Sample of convenience involving 21 young adult university students and staff. Ankle stability was categorized by score on the Cumberland Ankle I
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8

Perotti, L. R., O. Abousamra, M. del Pilar Duque Orozco, K. J. Rogers, J. P. Sees, and F. Miller. "Foot and ankle deformities in children with Down syndrome." Journal of Children's Orthopaedics 12, no. 3 (2018): 218–26. http://dx.doi.org/10.1302/1863-2548.12.170197.

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Purpose Foot and ankle deformities are common orthopaedic disorders in children with Down syndrome. However, radiographic measurements of the foot and ankle have not been previously reported. The aim of this study is to describe the foot and ankle deformity in children with Down syndrome. Methods Children who had foot and ankle radiographs in the standing weight-bearing position were selected. Three groups of patients were identified. The relationship of radiographic measurements with age, body mass index and pain is discussed. In all, 41 children (79 feet) had foot radiographs and 60 children
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9

Jung, Hong-Geun, Hwa-Jun Kang, Mao-Yuan Sun, and Juan Agustin Coruna. "Magnetic Resonance Imaging Findings of the Lateral Ankle Instability after Anatomical Ligament Reconstruction Using a Semitendinosus Allograft Tendon with Biotenodesis Screws." Foot & Ankle Orthopaedics 3, no. 3 (2018): 2473011418S0027. http://dx.doi.org/10.1177/2473011418s00274.

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Category: Ankle Introduction/Purpose: Surgery for lateral ankle instability is indicated in patients who have repetitive inversion ankle sprains despite conservative therapy. There have been many reconstruction procedures performed for the lateral ankle ligament instability. However, there has not been any report of postoperative MRI findings of lateral ankle instability after ligament reconstruction using a free tendon and biotenodesis screws. Therefore, this study was to analysis the MRI finding of the postoperative lateral ankle reconstruction using semitendinosus allograft tendon and the c
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10

Krähenbühl, Nicola, Lukas Zwicky, Manja Deforth, Beat Hintermann, and Markus Knupp. "Subtalar Joint Alignment in Ankle Osteoarthritis." Foot & Ankle Orthopaedics 2, no. 3 (2017): 2473011417S0002. http://dx.doi.org/10.1177/2473011417s000249.

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Category: Ankle Arthritis, Hindfoot Introduction/Purpose: The influence of the subtalar joint on the evolution of ankle joint osteoarthritis is still a matter of debate. Although subtalar joint compensation of deformities above the ankle joint was proposed until mid-stage of ankle osteoarthritis, the evidence of this assumption is weak. In this study, we investigated the subtalar joint alignment in different stages of ankle joint osteoarthritis using weightbearing CT scans. The influence of the tibio-talar tilt and presence of subtalar joint osteoarthritis was additionally assessed. We hypothe
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Kang, Ho Won, Gil Young Park, Dong-Oh Lee, Yoon A. Ro, and Dong Yeon Lee. "Coronal Plane Calcaneal-Talar Orientation in Varus Ankle Osteoarthritis." Foot & Ankle Orthopaedics 7, no. 4 (2022): 2473011421S0071. http://dx.doi.org/10.1177/2473011421s00716.

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Category: Hindfoot; Ankle; Ankle Arthritis Introduction/Purpose: We do not yet fully understand how the subtalar joint position is related to the varus osteoarthritic ankle joint. The purposes of this study were 1) to investigate the coronal orientation of the calcaneus relative to the talus according to the ankle osteoarthritis stage, talar tilt (TT), and 2) to determine if there is a TT threshold at which apparent subtalar compensation begins to fade. Methods: We retrospectively reviewed 132 ankles that underwent WBCT for varus ankle osteoarthritis. The TT, subtalar inclination angle (SIA),
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Yoshikawa, Masahiro, Tomoyuki Nakasa, Mikiya Sawa, et al. "Evaluation of the ankle position sense in the fatigue foot." Foot & Ankle Orthopaedics 3, no. 3 (2018): 2473011418S0052. http://dx.doi.org/10.1177/2473011418s00524.

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Category: Ankle Introduction/Purpose: Previous studies have described the damage of sensori-motor control in ankle sprain as being a possible cause of functional instability. The methods to demonstrate the functional instability, have included the postural balance test, peroneal muscle reaction time to sudden ankle inversion, peroneal nerve conduction velocity, and joint position sense of the ankle. On the other hand, isokinetic fatigue of ankle plantar flexion and dorsiflexion exhibits the correlation with postural instability. We hypothesize muscle fatigue around ankle joint causes abnormali
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13

Rolfe, Bruce, William Nordt, Julian G. Sallis, and Michael Distefano. "Assessing Fibular Length Using Bimalleolar Angular Measurements." Foot & Ankle 10, no. 2 (1989): 104–9. http://dx.doi.org/10.1177/107110078901000210.

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Shortening of the fibula after fracture is common and often difficult to appreciate. Loss of lateral malleolar anatomy causes significant biomechanical changes in the ankle and correlates with poor clinical results. We studied angular measurements of distal fibular length to serve as a guide for assessing fibular reduction after ankle fracture. Mortise view X-rays of 50 normal ankles from 25 healthy volunteers were obtained. The average talocrural angle measured 78.5°. However, individual variation was high with values ranging from 75 to 86°. Comparing contralateral ankles demonstrated an aver
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14

Zhou, Yunfeng, and Bin Song. "Arthroscopic anatomical reconstruction of anterior talofibular ligament and calcaneofibular ligament for chronic ankle instability." Foot & Ankle Orthopaedics 3, no. 3 (2018): 2473011418S0054. http://dx.doi.org/10.1177/2473011418s00540.

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Category: Arthroscopy Introduction/Purpose: To evaluate the clinical results of an anatomical reconstruction of anterior talofibular ligament and calcaneofibular ligament under arthroscopy in treatment of chronic ankle instability. Methods From June 2013 to August 2016, 27 patients (28 ankles) with chronic ankle instability were treated with the anatomical reconstruction of anterior talofibular ligaments and calcaneofibular ligaments. All patients were evaluated preoperatively and at the last follow up using the visual analog scale(VAS) score, American Orthopaedic Foot and Ankle Society (AOFAS
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15

Peiffer, M. "APPLICATIONS OF WEIGHTBEARING CT IN JOINT INSTABILITY." Orthopaedic Proceedings 106-B, SUPP_2 (2024): 70. http://dx.doi.org/10.1302/1358-992x.2024.2.070.

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Acute syndesmotic ankle injuries continue to impose a diagnostic dilemma and it remains unclear whether weighbearing or external rotation should be exerted rotation during the imaging process. Therefore, we aimed to implement both axial load (weightbearing) and external rotation in the assessment of a clinical cohort of patients with syndesmotic ankle injuries syndesmotic using weightbearing CT imaging. In this retrospective comparative cohort study, patients with an acute syndesmotic ankle injury were analyzed using a WBCT (N= 20; Mean age= 31,64 years; SD= 14,07. Inclusion criteria were an M
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16

Ebaugh, M. Pierce, Greg Grenier, Satbir Singh, Oussama Abousamra, and Kevin Klingele. "Ankle Mortise Instability in Multiple Hereditary Exostoses." Foot & Ankle Orthopaedics 4, no. 4 (2019): 2473011419S0016. http://dx.doi.org/10.1177/2473011419s00167.

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Category: Ankle, Ankle Arthritis, Pediatric Foot and Ankle Introduction/Purpose: Ankle valgus has been reported in 50% of patients with multiple hereditary exostoses (MHE) and, untreated, results in early arthrosis. Widening of the ankle mortise has also been reported; however, there has been a lack of data regarding its natural history and management. Alterations of mortise anatomy result in poor functional outcomes and accelerated arthrosis of the ankle. The aim of our study was to report the characteristics and outcomes of mortise widening in a group of patients with MHE. Methods: A total o
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TARNITA, DANIELA, MARIUS GEORGESCU, GABRIELA MARINACHE, DIANA PRUNOIU, and DANUT-NICOLAE TARNITA. "Study of human ankle joint stability during stairs up and stairs down." Journal of Engineering Sciences and Innovation 9, no. 1 (2024): 23–32. https://doi.org/10.56958/jesi.2024.9.1.23.

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. In this paper, nonlinear dynamics tools are the basis for analyzing the stability of the human ankle joint during stairs up and stairs down. Lyapunov exponents are determined in order to quantify the human ankle stability from biomechanical experimental data collected for flexion-extension angle and inversion-eversion angle of right and left ankles in 9 healthy subjects and 7 patients with knee osteoarthritis. Both samples performed the experimental stair ascending and descending tests. To analyze the acquired bi
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Yi, Zeng, Zhou Zongke, Shen Bin, et al. "X-ray image characteristics and related measurements in the ankles of 118 adult patients with Kashin-Beck disease." Chinese Medical Journal 127, no. 13 (2014): 2479–83. http://dx.doi.org/10.3760/cma.j.issn.0366-6999.20131750.

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Background Kashin-Beck disease (KBD) is a chronic, degenerative osteoarthropathy that causes severe skeletal deformation. Although many researchers have proven that almost all KBD patients who showed an increaseing proximo-distal gradient had radiographic abnormalities of the ankle, few detailed description of radiographic changes in the ankles of patients with KBD has been reported, especially for variable measurements of ankle changes. The purpose of this study was to demonstrate the radiographic characteristics of the ankles of adult KBD patients. Methods One hundred and eighteen adult KBD
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Chun, Dong-Il, Jahyung Kim, Sung Hun Won, et al. "Changes in Coronal Alignment of the Knee Joint after Supramalleolar Osteotomy." BioMed Research International 2021 (February 19, 2021): 1–8. http://dx.doi.org/10.1155/2021/6664279.

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Background. Assessing knee joint orientation changes after SMO may help clinical advancement in managing patients with ipsilateral ankle and knee joint arthritis. However, knee joint changes after supramalleolar osteotomy (SMO) have not been reported. We investigated changes in coronal alignment of the knee joint after SMO. Methods. In this multicentre study, from January 2014 to December 2018, 47 ankles with varus osteoarthritis treated with SMO were retrospectively identified. Ankle joint changes were assessed using the tibiotalar angle, talar tilt angle, and lateral distal tibial angle (LDT
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Lee, Si Wook. "Transfixing Screw Placement for Syndesmotic Injury." Foot & Ankle Orthopaedics 3, no. 3 (2018): 2473011418S0031. http://dx.doi.org/10.1177/2473011418s00313.

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Category: Trauma Introduction/Purpose: The strategy of transfixing screw fixation including screw number, size, material, the number of cortex involved, and penetrating angle is controversial. The purpose of this fresh frozen cadaveric study is to demonstrate the optimal degree of transfixing screw insertion after syndesmotic reduction in the Pronation External Rotation (PER) type ankle fractures, and to study reliable parameters to evaluate the syndesmotic reduction. Methods: Twenty paired fresh frozen anatomic specimens of the ankles were obtained. Before dissection, CT scans were taken preo
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Fu, Amy S. N., and Christina W. Y. Hui-Chan. "Ankle Joint Proprioception and Postural Control in Basketball Players with Bilateral Ankle Sprains." American Journal of Sports Medicine 33, no. 8 (2005): 1174–82. http://dx.doi.org/10.1177/0363546504271976.

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Background Deficiencies in ankle proprioception and standing balance in basketball players with multiple ankle sprains have been reported in separate studies. However, the question of how ankle proprioceptive inputs and postural control in stance are related is still unclear. Hypothesis Ankle repositioning errors and the amount of postural sway in stance are increased in basketball players with multiple ankle sprains. Study Design Controlled laboratory study. Methods Twenty healthy male basketball players and 19 male basketball players who had suffered bilateral ankle sprains within the past 2
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Ciufo, David J., Erin A. Baker, and Paul T. Fortin. "Tibial Torsion May Predict Morphology of the Talus." Foot & Ankle Orthopaedics 5, no. 4 (2020): 2473011420S0017. http://dx.doi.org/10.1177/2473011420s00171.

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Category: Ankle Arthritis; Ankle; Hindfoot Introduction/Purpose: The role of implant positioning in total ankle arthroplasty (TAA) has garnered increasing attention, particularly in defining coronal and sagittal plane alignment. With the ongoing developments in patient specific instrumentation, advanced imaging is becoming a more common tool in preoperative planning. Despite this, there is limited information available on axial rotation of the ankle or variations in anatomy of the talus and foot. We aim to evaluate the rotational profile of the distal tibia and its relationship to morphology o
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Benevides, Pedro Costa, Caio Augusto de Souza Nery, Alexandre Leme Godoy-Santos, José Felipe Marion Alloza, and Marcelo Pires Prado. "Study of the radiographic parameters of normal ankles." Journal of the Foot & Ankle 14, no. 1 (2020): 84–88. http://dx.doi.org/10.30795/jfootankle.2020.v14.1125.

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Objective: The authors carried out a bibliographic search for the radiographic parameters used to determine tibiotalar joint alignment, and suggest a set of parameters that constitute the minimum radiographic evaluation sufficient for the proper assessment of tibiotalar alignment. Methods: The search was conducted between May 2019 and January 2020 on the online platforms PudMed and Google Scholar with the following terms, used separately or jointly: “ankle arthritis, radiographic measurement, ankle alignment, alignment, anterior ankle instability, X-ray, and ankle injury”. Results: We selected
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Piga, Camilo, Camilla Maccario, Riccardo D’Ambrosi, Fausto Romano, and Federico Giuseppe Usuelli. "Total Ankle Arthroplasty With Valgus Deformity." Foot & Ankle International 42, no. 7 (2021): 867–76. http://dx.doi.org/10.1177/1071100720985281.

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Background: A substantial coronal plane deformity is common in the context of end-stage ankle osteoarthritis. Recent literature shows a trend toward extending the indication of total ankle arthroplasty in increasingly severe coronal deformities, showing promising results when correct alignment is achieved. Nevertheless, the results of lateral transfibular total ankle replacement (LTTAR) in valgus has not been extensively studied. We aimed to evaluate if the outcomes of LTTAR in ankles with valgus deformity were similar to those with no major deformity at short-term follow-up. Methods: This ret
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Lee, Gun-Woo, Asep Santoso, and Keun-Bae Lee. "Comparison of Intermediate-term Outcomes of Total Ankle Arthroplasty in Primary and Ligamentous Post-traumatic Osteoarthritis." Foot & Ankle International 40, no. 11 (2019): 1273–81. http://dx.doi.org/10.1177/1071100719866472.

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Background: Ankle ligamentous injuries without fracture can result in end-stage ligamentous post-traumatic osteoarthritis, which may cause ligamentous imbalance after total ankle arthroplasty (TAA). However, outcomes of TAA in these patients are not well known. The purpose of this study was to evaluate intermediate-term clinical and radiographic outcomes of TAA in patients with ligamentous post-traumatic osteoarthritis and compare them with results of TAA for patients with primary osteoarthritis. Methods: We enrolled 114 patients (119 ankles) with consecutive primary TAA using HINTEGRA prosthe
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Choi, Ji Hye, Hee Soo Han, Young Jin Park, Seungbum Koo, Taeyong Lee, and Kyoung Min Lee. "Relationship between ankle varus moment during gait and radiographic measurements in patients with medial ankle osteoarthritis." PLOS ONE 16, no. 6 (2021): e0253570. http://dx.doi.org/10.1371/journal.pone.0253570.

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Background Kinetic data obtained during gait can be used to clarify the biomechanical pathogenesis of osteoarthritis of the lower extremity. This study aimed to investigate the difference in ankle varus moment between the varus angulation and medial translation types of medial ankle osteoarthritis, and to identify the radiographic measurements associated with ankle varus moment. Methods Twenty-four consecutive patients [mean age 65.8 (SD) 8.0 years; 9 men and 15 women] with medial ankle osteoarthritis were included. Fourteen and 10 patients had the varus angulation (tibiotalar tilt angle≥3 deg
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Kovaleski, John E., Robert J. Heitman, Larry R. Gurchiek, J. M. Hollis, Wei Liu, and Albert W. Pearsall IV. "Joint Stability Characteristics of the Ankle Complex in Female Athletes With Histories of Lateral Ankle Sprain, Part II: Clinical Experience Using Arthrometric Measurement." Journal of Athletic Training 49, no. 2 (2014): 198–203. http://dx.doi.org/10.4085/1062-6050-49.2.08.

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Context: This is part II of a 2-part series discussing stability characteristics of the ankle complex. In part I, we used a cadaver model to examine the effects of sectioning the lateral ankle ligaments on anterior and inversion motion and stiffness of the ankle complex. In part II, we wanted to build on and apply these findings to the clinical assessment of ankle-complex motion and stiffness in a group of athletes with a history of unilateral ankle sprain. Objective: To examine ankle-complex motion and stiffness in a group of athletes with reported history of lateral ankle sprain. Design: Cro
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Kvarda, Peter, Laszlo Toth, Tamar Horn-Lang, Roman Susdorf, Roxa Ruiz, and Beat Hintermann. "Short-Term Outcomes of a Two-Component Total Ankle Replacement in Revision Arthroplasty." Foot & Ankle Orthopaedics 7, no. 4 (2022): 2473011421S0073. http://dx.doi.org/10.1177/2473011421s00739.

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Category: Ankle Arthritis; Ankle; Hindfoot Introduction/Purpose: Given the growing number of primary total ankle replacements (TAR), an increase in the numbers of failed ankles and consecutive revisions might be expected. Achieving a stable and balanced ankle based on stable components while preserving the remaining bone stock as much as possible, are crucial for success in revision TAR. Most reported techniques rely on bulky implants with extended fixation features. Since 2018, we have used a novel 3-component ankle for revision surgery that is converted in situ to a fixed-bearing 2-component
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Moore, Andrew M., Anish R. Kadakia, Richard E. Hughes, and Ramon A. Ruberte Thiele. "Effect of Ankle Flexion Angle on Axial Alignment of Total Ankle Replacement." Foot & Ankle International 31, no. 12 (2010): 1093–98. http://dx.doi.org/10.3113/fai.2010.1093.

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Teramoto, Atsushi, Hiroaki Shoji, Hideji Kura, et al. "Factors Related to the Occurrence of Osteochondral Lesions of the Talus by 3-dimensional Bone Morphology of the Ankle." Foot & Ankle Orthopaedics 3, no. 3 (2018): 2473011418S0048. http://dx.doi.org/10.1177/2473011418s00487.

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Category: Ankle Introduction/Purpose: Repeated microtrauma is thought to play a major role in the occurrence of osteochondral lesions of the talus (OLTs), but much remains unknown. Two-dimensional assessments of the relationship between ankle bone morphology and OLTs are occasionally seen. The purpose of this study was to evaluate the bone morphology of the ankle in OLT 3-dimensionally using three-dimensional computed tomography (3DCT), and to investigate the factors related to the occurrence of OLTs. Methods: The subjects were 19 patients (19 ankles) who underwent surgery for medial OLTs (OLT
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Miyasaka, Hayato, Bungo Ebihara, Takashi Fukaya, and Hirotaka Mutsuzaki. "Relationship between the Young’s Modulus of the Achilles Tendon and Ankle Dorsiflexion Angle at Maximum Squat Depth in Healthy Young Males." Medicina 59, no. 6 (2023): 1105. http://dx.doi.org/10.3390/medicina59061105.

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Background and Objective: Achilles tendon (AT) stiffness can reduce ankle dorsiflexion. However, whether AT stiffness affects the ankle dorsiflexion angle at a maximum squat depth remains unclear. Therefore, we aimed to investigate the relationship between the Young’s modulus of the AT and ankle dorsiflexion angle at the maximum squat depth in healthy young males using shear-wave elastography (SWE). Materials and Methods: This cross-sectional study included 31 healthy young males. AT stiffness was measured using the Young’s modulus through SWE. The ankle dorsiflexion angle at the maximum squat
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Kondo, Hitoshi. "Changes in the Ground Reaction Force, Lower-Limb Muscle Activity, and Joint Angles in Athletes with Unilateral Ankle Dorsiflexion Restriction During A Rebound-Jump Task." Journal of Functional Morphology and Kinesiology 3, no. 4 (2018): 52. http://dx.doi.org/10.3390/jfmk3040052.

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Background: This study compared differences between a control group and a group with unilateral ankle dorsiflexion restriction in the ground reaction force (GRF), angles of the lower limbs joints, and muscular activity during a rebound-jump task in athletes who continue to perform sports activities with unilateral ankle dorsiflexion restriction. Methods: The athletes were divided into the following two groups: The dorsiflexion group included those with a difference of ≥7° between bilateral ankle dorsiflexion angles (DF), and the control group included those with a difference of <7° between
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Shih, Han-Ting, Shun-Ping Wang, Cheng-Hung Lee, Kao-Chang Tu, Shih-Chieh Tang, and Kun-Hui Chen. "Factors influencing ankle alignment changes following medial unicompartmental knee arthroplasty: Preoperative knee and ankle deformities and extent of knee alignment correction." PLOS ONE 20, no. 3 (2025): e0318677. https://doi.org/10.1371/journal.pone.0318677.

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Introduction The impact of medial unicompartmental knee arthroplasty (MUKA) on ankle alignment is not well-studied. This study aims to investigate the changes in ankle alignment following MUKA and identify the influencing factors. Materials and Methods A retrospective analysis included 175 patients undergoing MUKA between 2018 and 2020. Patients were categorized into varus (n = 113) or valgus (n = 62) ankle groups based on preoperative ankle deformities. Preoperative and postoperative full-length standing radiographs were used for radiographic measurements. Results Following MUKA, significant
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Scheidegger, P., T. Horn Lang, C. Schweizer, L. Zwicky, and B. Hintermann. "A flexion osteotomy for correction of a distal tibial recurvatum deformity." Bone & Joint Journal 101-B, no. 6 (2019): 682–90. http://dx.doi.org/10.1302/0301-620x.101b6.bjj-2018-0932.r2.

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Aims There is little information about how to manage patients with a recurvatum deformity of the distal tibia and osteoarthritis (OA) of the ankle. The aim of this study was to evaluate the functional and radiological outcome of addressing this deformity using a flexion osteotomy and to assess the progression of OA after this procedure. Patients and Methods A total of 39 patients (12 women, 27 men; mean age 47 years (28 to 72)) with a distal tibial recurvatum deformity were treated with a flexion osteotomy, between 2010 and 2015. Nine patients (23%) subsequently required conversion to either a
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Kernozek, Thomas, Christopher J. Durall, Allison Friske, and Matthew Mussallem. "Ankle Bracing, Plantar-Flexion Angle, and Ankle Muscle Latencies During Inversion Stress in Healthy Participants." Journal of Athletic Training 43, no. 1 (2008): 37–43. http://dx.doi.org/10.4085/1062-6050-43.1.37.

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Abstract Context: Ankle braces may enhance ankle joint proprioception, which in turn may affect reflexive ankle muscle activity during a perturbation. Despite the common occurrence of plantar-flexion inversion ankle injuries, authors of previous studies of ankle muscle latencies have focused on inversion stresses only. Objective: To examine the latency of the peroneus longus (PL), peroneus brevis (PB), and tibialis anterior (TA) muscles in response to various degrees of combined plantar-flexion and inversion stresses in braced and unbraced asymptomatic ankles. Design: Repeated measures. Settin
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Dao, Duc minh, P.D. Phuoc, and T.X. Tuy. "Research control for ankle joint rehabilitation device." Journal of Mechanical Engineering and Sciences 16, no. 1 (2022): 8743–53. http://dx.doi.org/10.15282/jmes.16.1.2022.08.0691.

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The ankle is one of the joints that is often injured when playing sports or in daily activities. Improper handling due to lack of knowledge about the ankles causes these injuries to last long, cause disability and affect our daily activities. Rehabilitation treatment is important for the purpose of maintaining and improving the mobility of joints. This paper, presenting the experimental results of the training device to rehabilitate ankle joints for human in dorsiflexion/plantarflexion exercises. The PD controller has been applied and controlled device. During the training, the angle of the an
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Im, Jemin, Hong-Geun Jung, and Jung-Won Lim. "Lateral Joint Distraction Through Distal Fibula Lengthening Osteotomy for Lateral Compartment Ankle Osteoarthritis." Foot & Ankle Orthopaedics 7, no. 4 (2022): 2473011421S0070. http://dx.doi.org/10.1177/2473011421s00702.

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Category: Ankle; Trauma Introduction/Purpose: Lateral compartment ankle OA, commonly due to trauma such as ankle fracture, is not very rare. However there's no definite established surgical treatment option. In this study, we suggest distal fibula lengthening osteotomy for lateral joint distraction as one of treatment surgical option. We have experienced favorable clinical outcome for 3 cases of post- traumatic lateral compartment ankle OA with joint space narrowing treated with distal fibula distraction osteotomy. We report the case series with the surgical technique and the clinical-radiolog
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Jung, Hong-Geun, Na-Ra Kim, Tae-Hoon Kim, Joon-Sang Eom, and Dong-Oh Lee. "Magnetic Resonance Imaging and Stress Radiography in Chronic Lateral Ankle Instability." Foot & Ankle International 38, no. 6 (2017): 621–26. http://dx.doi.org/10.1177/1071100717693207.

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Background: Studies regarding magnetic resonance imaging (MRI) findings of the lateral ankle ligaments in chronic lateral ankle instability and their clinical relevance for surgery are lacking. This study classified the lateral ankle ligament MRI findings of the anterior talofibular ligament (ATFL) and calcaneofibular ligament (CFL) in chronic lateral ankle instability (CLAI) and correlated these findings with ankle stress radiographs. Methods: We included 132 ankles with CLAI that underwent ligament reconstructions from 2006 to 2013. The distributions of the ATFL and CFL morphologies were eva
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Kurokawa, Hiroaki, Akira Taniguchi, Takuma Miyamoto, and Yasuhito Tanaka. "The Relationship Between the Distal Tibial Fibular Syndesmosis and the Varus Deformity in Patients With Varus Ankle Osteoarthritis." Foot & Ankle Orthopaedics 6, no. 4 (2021): 247301142110411. http://dx.doi.org/10.1177/24730114211041111.

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Background: The impact of varus ankle osteoarthritis (OA) on the distal tibial fibular syndesmosis is poorly described. This study aimed to investigate the possible relationship between the condition of the distal tibial fibular syndesmosis and the degree of the varus deformity using weightbearing simulated computed tomography (CT), in patients with varus ankle OA. Methods: This retrospective comparative study included 155 varus ankles, divided into 4 Takakura-Tanaka groups (stage 2, 3a, 3b, and 4). A control group comprised 35 ankles without prior ankle disorders. The angles between the tibia
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Safaeepour, Zahra, Ali Esteki, Farhad Tabatabai Ghomshe, and Mohammad E. Mousavai. "Design and development of a novel viscoelastic ankle-foot prosthesis based on the human ankle biomechanics." Prosthetics and Orthotics International 38, no. 5 (2014): 400–404. http://dx.doi.org/10.1177/0309364613505108.

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Background and aim: In the present study, a new approach was applied to design and develop a viscoelastic ankle-foot prosthesis. The aim was to replicate the intact ankle moment–angle loop in the normal walking speed. Technique: The moment–angle loop of intact ankle was divided into four parts, and the appropriate models including two viscoelastic units of spring-damper mechanism were considered to replicate the passive ankle dynamics. The developed prototype was then tested on a healthy subject with the amputee gait simulator. The result showed that prosthetic ankle moment–angle loop was simi
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Silvestri, Claudia A. Di, Riccardo D’Ambrosi, Camilla Maccario, Cristian Indino, and Federico Giuseppe Usuelli. "Severe Ankle Varus Malalignment Management with a Fix-Bearing Total Ankle Replacement Implant." Foot & Ankle Orthopaedics 5, no. 4 (2020): 2473011420S0019. http://dx.doi.org/10.1177/2473011420s00194.

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Category: Ankle Arthritis; Ankle Introduction/Purpose: Despite Total ankle replacement (TAR) is currently considered a safe procedure and an optimal alternative to ankle fusion in end-stage ankle arthritis, still the precise indications and the limits of TAR are a highly controversial topic. Coronal malalignment correction with TAR is also a widely debated point. Purpose of this work was to confront two patient groups undergoing Total Ankle Replacement (a group of patients with a pre-operative ankle varus misalignment on coronal plane, versus a group of patients with neutral pre-operative ankl
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Liu, Wen, Tarang Jain, and Clayton Wauneka. "A New Dimension in the Study of Human Functional Joint Instability." Applied Mechanics and Materials 249-250 (December 2012): 1271–76. http://dx.doi.org/10.4028/www.scientific.net/amm.249-250.1271.

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Functional joint instability is common after joint soft tissue injuries. We present in this report our pilot finding in a study of functional ankle instability. Although past studies have suggested multiple pathological factors for functional ankle instability, none of those factors has been confirmed in the past studies. More importantly, no known factor can provide an explanation for an ankle giving way phenomenon which is a key element in defining a functional ankle instability. In this pilot study, we tested five subjects with functional ankle instability using a dynamic ankle stretching d
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Kim, Jaeyoung, Jensen K. Henry, Ji-Beom Kim, and Woo-Chun Lee. "Dome Supramalleolar Osteotomies for the Treatment of Ankle Pain with Opposing Coronal Plane Deformities Between Ankle and the Lower Limb." Foot & Ankle International 43, no. 4 (2021): 474–85. http://dx.doi.org/10.1177/10711007211050639.

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Background: The dome-type osteotomy is a powerful technique for deformity correction of the limb. However, there is limited information about the utility of dome supramalleolar osteotomy (SMO) in ankle joint preservation surgery. This study aimed to describe the technique and indications for dome SMO in distal tibial malalignment. Methods: Twenty-three patients (23 ankles) who underwent dome SMO with a 2-year follow-up were reviewed. Dome SMO was indicated when there were opposing deformities in the ankle and lower limb mechanical axis (ie, varus ankle deformity with valgus lower limb alignmen
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Shih, Han-Ting, Wei-Jen Liao, Kao-Chang Tu, Cheng-Hung Lee, Shih-Chieh Tang, and Shun-Ping Wang. "Poor Correction Capacity of Preexisting Ankle Valgus Deformity after Total Knee Arthroplasty." Journal of Clinical Medicine 10, no. 16 (2021): 3624. http://dx.doi.org/10.3390/jcm10163624.

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This study investigated the differences in ankle alignment changes after TKA in patients with varying preexisting ankle deformities. We retrospectively examined 90 knees with osteoarthritis and varus deformity in 78 patients who underwent TKA. Preoperative and postoperative radiographic parameters were analyzed. According to their preexisting ankle deformity, patients were assigned to the valgus or varus group. Overall, 14 (15.6%) cases were of preoperative valgus ankle deformity; the remainder were of preoperative varus ankle deformity. Hip–knee–ankle angle (HKA), tibial plafond–ground angle
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Park, Byeong-Seop, Seungbum Koo, Won-keun Park, Ki-bum Kwon, and Kyoung Min Lee. "Opposite Association Between Radiographic Lateral Ankle Instability and Osteochondral Lesions of the Talus in Patients with Ankle Inversion Injuries." Foot & Ankle Orthopaedics 4, no. 4 (2019): 2473011419S0033. http://dx.doi.org/10.1177/2473011419s00332.

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Category: Ankle Introduction/Purpose: Insufficient bony coverage surrounding the talus could cause considerable mechanical ankle instability, whereas excessive bony coverage could cause bone contusion at the time of injury and subsequent osteochondral lesions of the talus (OLT). This study aimed to investigate the relationship between radiographic lateral ankle instability and OLT in patients that sustained ankle inversion injuries. Methods: One-hundred-ninety-five patients (113 men and 83 women; mean age, 38.7 years; standard deviation, 8.8 years) with a history of ankle inversion injuries we
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Park, Byeong Seop, Chin Youb Chung, Moon Seok Park, et al. "Inverse Relationship Between Radiographic Lateral Ankle Instability and Osteochondral Lesions of the Talus in Patients With Ankle Inversion Injuries." Foot & Ankle International 40, no. 12 (2019): 1368–74. http://dx.doi.org/10.1177/1071100719868476.

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Background: Insufficient or excessive bony constraint surrounding the talus might contribute to the occurrence of ligamentous injury or bone contusion, respectively, at the time of ankle inversion injuries. This study aimed to investigate the relationship between radiographic lateral ankle instability and osteochondral lesions of the talus (OLT) following ankle inversion injuries. Methods: A total of 195 patients (113 men and 83 women; mean age, 38.7 years) with a history of ankle inversion injuries were included in this study. All patients underwent ankle magnetic resonance imaging (MRI) and
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Kwon, Yong. "Static Postural Stability in Chronic Ankle Instability, an Ankle Sprain and Healthy Ankles." International Journal of Sports Medicine 39, no. 08 (2018): 625–29. http://dx.doi.org/10.1055/a-0608-4552.

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AbstractTo identify the single leg balance (SLB) test that discriminates among healthy, coper, and chronic ankle instability (CAI) groups and to determine effects of ankle muscles on the balance error scoring system (BESS) among the three populations. 60 subjects (20 per group) performed the SLB test with eyes open (EO) and eyes closed (EC). Normalized mean amplitude (NMA) of the tibia anterior (TA), fibularis longus (FL), and medial gastrocnemius (MG) muscles and BESS were measured while performing the SLB test. The coper group had a lower error score than the CAI group in the EC. NMA was gre
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Wanner, Philipp, Thomas Schmautz, Felix Kluge, Björn Eskofier, Klaus Pfeifer, and Simon Steib. "Ankle angle variability during running in athletes with chronic ankle instability and copers." Gait & Posture 68 (February 2019): 329–34. http://dx.doi.org/10.1016/j.gaitpost.2018.11.038.

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KITABATA, Kosuke, Satoshi KOMADA, Daisuke YASHIRO, and Kazuhiro YUBAI. "Estimation of ankle torque by plantar flexor muscles using EMG and ankle angle." Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec) 2019 (2019): 2A1—G09. http://dx.doi.org/10.1299/jsmermd.2019.2a1-g09.

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Brandle, Greggory, Kaitlyn Rizzo, Nicholas A. Cheney, and Brian C. Clark. "A Retrospective Chart Review to Determine Lateral Ankle Instability Treatment based off of the Degree of Varus Tilt." Foot & Ankle Orthopaedics 5, no. 4 (2020): 2473011420S0014. http://dx.doi.org/10.1177/2473011420s00143.

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Category: Ankle Introduction/Purpose: One of the most common injuries in the United States is the ankle sprain, accounting for 10-15% of sport injuries. Without proper treatment, about one-third of patients reinjure the same ankle and can progress to chronic lateral ankle instability. An ankle can be clinically evaluated by performing an inversion stress test and measuring the degree of varus tilt. The purpose of this retrospective chart review was to examine if a correlation exists between the degree of varus tilt on a stress x-ray and whether the patients were treated conservatively or surgi
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