Xin He, Matthew Chun Sing Chow, Jihong Qiu, Sai-Chuen Fu, Kam-Ming Mok, Michael Tim-Yun Ong, Daniel T P Fong, Patrick Shu-Hang Yung
{"title":"Knee wobbling during the single-leg-squat-and-hold test reflects dynamic knee instability in patients with anterior cruciate ligament injury.","authors":"Xin He, Matthew Chun Sing Chow, Jihong Qiu, Sai-Chuen Fu, Kam-Ming Mok, Michael Tim-Yun Ong, Daniel T P Fong, Patrick Shu-Hang Yung","doi":"10.1080/15438627.2022.2113879","DOIUrl":null,"url":null,"abstract":"<p><p>We propose using the single-leg squat-and-hold (SLSH) task with kinematic analysis to objectively measure dynamic knee stability after anterior cruciate ligament (ACL) injury. There are three objectives of this study: to compare the knee kinematics of ACL-deficient patients and healthy controls by capturing knee wobbling during the SLSH task, to detect kinematic changes after ACL reconstruction, and to correlate the kinematic variables with self-reported knee function. Twenty-five ACL-deficient participants and 18 healthy matched participants were recruited. The knee kinematics involving both the magnitudes and frequency of motion fluctuation was captured during SLSH by 3D motion analysis system (Vicon). Compared to the limbs of the control participants, the ACL involved limbs exhibited a greater range of flexion-extension (4.33 ± 1.96 vs. 2.73 ± 1.15; <i>p</i> = 0.005) and varus-valgus (2.52 ± 0.99 vs. 1.36 ± 0.42; <i>p</i> < 0.001). It also inhibited higher frequency of flexion-extension (4.87 ± 2.55 vs. 2.68 ± 1.23; <i>p</i> = 0.003) and varus-valgus (3.83 ± 2.59 vs. 1.42 ± 0.55; <i>p</i> < 0.001). The range of flexion-extension (4.50 ± 2.24 vs. 2.90 ± 1.01; <i>p</i> = 0.018), frequency of flexion-extension (4.58 ± 2.53 vs. 3.05 ± 1.80; <i>p</i> = 0.038) and varus-valgus (3.46 ± 2.11 vs. 1.80 ± 1.23; <i>p</i> = 0.022) was reduced after ACL reconstruction. Increased frequency of knee varus-valgus was correlated with lower IKDC score (r = -0.328; <i>p</i> = 0.034). Knee wobbling was more prominent in ACL-deficient patients, which was associated with poor knee function. SLSH task with kinematic analysis appears to be a potential assessment method for monitoring dynamic knee stability after ACL injury.</p>","PeriodicalId":20958,"journal":{"name":"Research in Sports Medicine","volume":null,"pages":null},"PeriodicalIF":1.9000,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Research in Sports Medicine","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1080/15438627.2022.2113879","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2022/8/19 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"SPORT SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
We propose using the single-leg squat-and-hold (SLSH) task with kinematic analysis to objectively measure dynamic knee stability after anterior cruciate ligament (ACL) injury. There are three objectives of this study: to compare the knee kinematics of ACL-deficient patients and healthy controls by capturing knee wobbling during the SLSH task, to detect kinematic changes after ACL reconstruction, and to correlate the kinematic variables with self-reported knee function. Twenty-five ACL-deficient participants and 18 healthy matched participants were recruited. The knee kinematics involving both the magnitudes and frequency of motion fluctuation was captured during SLSH by 3D motion analysis system (Vicon). Compared to the limbs of the control participants, the ACL involved limbs exhibited a greater range of flexion-extension (4.33 ± 1.96 vs. 2.73 ± 1.15; p = 0.005) and varus-valgus (2.52 ± 0.99 vs. 1.36 ± 0.42; p < 0.001). It also inhibited higher frequency of flexion-extension (4.87 ± 2.55 vs. 2.68 ± 1.23; p = 0.003) and varus-valgus (3.83 ± 2.59 vs. 1.42 ± 0.55; p < 0.001). The range of flexion-extension (4.50 ± 2.24 vs. 2.90 ± 1.01; p = 0.018), frequency of flexion-extension (4.58 ± 2.53 vs. 3.05 ± 1.80; p = 0.038) and varus-valgus (3.46 ± 2.11 vs. 1.80 ± 1.23; p = 0.022) was reduced after ACL reconstruction. Increased frequency of knee varus-valgus was correlated with lower IKDC score (r = -0.328; p = 0.034). Knee wobbling was more prominent in ACL-deficient patients, which was associated with poor knee function. SLSH task with kinematic analysis appears to be a potential assessment method for monitoring dynamic knee stability after ACL injury.
期刊介绍:
Research in Sports Medicine is a broad journal that aims to bridge the gap between all professionals in the fields of sports medicine. The journal serves an international audience and is of interest to professionals worldwide. The journal covers major aspects of sports medicine and sports science - prevention, management, and rehabilitation of sports, exercise and physical activity related injuries. The journal publishes original research utilizing a wide range of techniques and approaches, reviews, commentaries and short communications.