Raizah Abdullah, Reddy Ravi Shankar, Alshahrani Mastour Saeed, Tedla Jaya Shanker, Dixit Snehil, Gular Kumar, Gautam Ajay Prashad, Ahmad Irshad, Kandakurti Praveen Kumar
Department of Orthopaedics, College of Medicine, King Khalid University, Abha 61421, Saudi Arabia.
Department of Medical Rehabilitation Sciences, College of Applied Medical Sciences, King Khalid University, Abha 61421, Saudi Arabia.
J Clin Med. 2023 Apr 7;12(8):2764. doi: 10.3390/jcm12082764.
(1) Background: Proprioception and limits of stability can significantly impact static and dynamic balance. Knee proprioception and limits of stability may be impaired in individuals with knee osteoarthritis (KOA). Impaired knee proprioception may impact the limits of stability, and understanding the associations between these factors is important for formulating treatment strategies in this population. The objectives of this study are to (a) compare the knee joint position error (JPE) and limits of stability between KOA and asymptomatic individuals and (b) assess the correlation between knee JPE and the limits of stability in KOA individuals. (2) Methods: This cross-sectional study included 50 individuals diagnosed with bilateral KOA and 50 asymptomatic individuals. Knee JPE was measured using a dual digital inclinometer at 25° and 45° of knee flexion (in the dominant and nondominant legs). The limits of stability variables, including reaction time (s), maximum excursion (%), and direction control (%), were evaluated using computerized dynamic posturography. (3) Results: The magnitude of the mean knee JPE is significantly larger in KOA individuals ( < 0.001) compared to asymptomatic individuals assessed at 25° and 45° of knee flexion in both the dominant and nondominant legs. The limits of stability test showed that KOA group individuals had a longer reaction time (1.64 ± 0.30 s) and reduced maximum excursion (4.37 ± 0.45) and direction control (78.42 ± 5.47) percentages compared to the asymptomatic group (reaction time = 0.89 ± 0.29, maximum excursion = 5.25 ± 1.34, direction control = 87.50 ± 4.49). Knee JPE showed moderate to strong correlations with the reaction time (r = 0.60 to 0.68, < 0.001), maximum excursion (r = -0.28 to -0.38, < 0.001) and direction control (r = -0.59 to -0.65, < 0.001) parameters in the limits of stability test. (4) Conclusions: Knee proprioception and limits of stability are impaired in KOA individuals compared to asymptomatic individuals, and knee JPE showed significant relationships with the limits of stability variables. These factors and correlations may be considered when evaluating and developing treatment strategies for KOA patients.
（1）背景：本体感觉和平衡极限会显著影响静态和动态平衡。膝关节骨关节炎（KOA）患者的膝关节本体感觉和平衡极限可能受损。膝关节本体感觉受损可能会影响平衡极限，了解这些因素之间的关联对于制定该人群的治疗策略很重要。本研究的目的是：（a）比较KOA患者与无症状个体之间的膝关节位置误差（JPE）和平衡极限；（b）评估KOA患者膝关节JPE与平衡极限之间的相关性。（2）方法：这项横断面研究纳入了50名被诊断为双侧KOA的个体和50名无症状个体。使用双数字倾角仪在膝关节屈曲25°和45°时（在优势腿和非优势腿上）测量膝关节JPE。使用计算机化动态姿势描记法评估平衡极限变量，包括反应时间（秒）、最大偏移（%）和方向控制（%）。（3）结果：在优势腿和非优势腿的膝关节屈曲25°和45°时进行评估，KOA患者的平均膝关节JPE幅度明显大于无症状个体（<0.001）。平衡极限测试表明，与无症状组相比，KOA组个体的反应时间更长（1.64±0.30秒），最大偏移（4.37±0.45）和方向控制（78.42±5.47）百分比降低（无症状组：反应时间=0.89±0.29，最大偏移=5.25±1.34，方向控制=87.50±4.49）。在平衡极限测试中，膝关节JPE与反应时间（r = 0.60至0.68，<0.001）、最大偏移（r = -0.28至-0.38，<0.001）和方向控制（r = -0.59至-0.65，<0.001）参数呈中度至强相关性。（4）结论：与无症状个体相比，KOA患者的膝关节本体感觉和平衡极限受损，并且膝关节JPE与平衡极限变量存在显著关系。在评估和制定KOA患者的治疗策略时，可能需要考虑这些因素及其相关性。
