CAI-study

Background: Studies investigating ankle condition in subjects with chronic ankle instability (CAI) using an on-the-field test battery are scarce. Understanding which tests that are most challenging for these subjects has the potential to set realistic goals in rehabilitation and return-to-sports criteria. Thus, the primary aim of this study was to investigate CAI subjects regarding strength, balance and functional performance with an easily used test battery that required minimal equipment.
Methods: This study was conducted with a cross-sectional design. A total of 20 CAI subjects, engaged in sports, and 15 healthy subjects serving as a control group, were tested for assessment of strength, balance and functional performance. A test battery was developed accordingly; isometric strength in inversion and eversion, the single leg stance test (SLS), single leg hop for distance (SLHD) and side hop test. The limb symmetry index was calculated to determine whether a side-to-side lower limb difference could be classified as normal or abnormal. The sensitivity of the test battery was also calculated.
Results: The subjects were 20% weaker on the injured side compared with the non-injured side in eversion (p<0.01) and 16% weaker in inversion (p<0.01) (Table 3). For the SLS test, the mean score of the injured side was 8 points (67%) higher (more foot lifts) compared to the non-injured side (p<0.01). The mean distance of the SLHD was 10 cm (9%) shorter for the injured side compare to the non-injured side (p=0.03). The mean number of side hop was 11 repetitions (29%) fewer for the injured side compare to the non-injured side (p<0.01). Six of the 20 subjects obtained abnormal LSI values in all five tests whereas none obtained normal values in all tests. The sensitivity of the test battery was 100%.
Conclusion: Deficits in muscle strength, balance and functional performance appear to be present in CAI subjects with the largest impairments in balance and side hop performance, which stresses the need for return to sport criteria for this group of subjects.

背景：采用赛场测试组合对慢性踝关节不稳（Chronic Ankle Instability, CAI）患者进行踝关节状态评估的相关研究较为匮乏。明确对该类患者难度最高的测试项目，有助于为其康复训练及回归运动标准制定合理目标。因此本研究的主要目的是，借助一套操作简便、所需设备极少的测试组合，对慢性踝关节不稳患者的肌力、平衡能力与功能表现展开评估。
方法：本研究采用横断面研究设计。招募20名参与体育运动的慢性踝关节不稳患者作为病例组，另招募15名健康受试者作为对照组，对两组受试者的肌力、平衡能力与功能表现进行测试。本研究据此构建了一套测试组合，包含踝关节内翻与外翻等长肌力测试、单腿站立测试（Single Leg Stance Test, SLS）、单腿跳跃距离测试（Single Leg Hop for Distance, SLHD）以及侧跳测试。通过计算肢体对称性指数（Limb Symmetry Index, LSI），可判定双侧下肢差异是否处于正常或异常范围。同时本研究还计算了该测试组合的灵敏度。
结果：与健侧相比，患侧踝关节外翻肌力降低20%（p<0.01），内翻肌力降低16%（p<0.01）（见表3）。单腿站立测试中，患侧的平均得分较健侧高8分（提升比例67%，即足部抬起次数更多，提示平衡能力更差）（p<0.01）。单腿跳跃距离测试中，患侧的平均跳跃距离较健侧短10cm（缩短比例9%，p=0.03）。侧跳测试中，患侧的平均完成次数较健侧少11次（减少比例29%，p<0.01）。20名慢性踝关节不稳患者中，有6名在全部5项测试中均出现异常的肢体对称性指数值，无受试者在所有测试中均表现为正常。该测试组合的灵敏度为100%。
结论：慢性踝关节不稳患者普遍存在肌力、平衡能力与功能表现的缺陷，其中平衡能力与侧跳表现的受损程度最为显著，这提示该类患者需制定专属的回归运动标准。

搜集汇总

背景与挑战

背景概述

该数据集包含关于慢性踝关节不稳定（CAI）患者的力量、平衡和功能表现的研究数据，通过简易测试电池发现CAI患者在受伤侧存在显著缺陷，特别是在平衡和侧跳表现上，强调了重返运动标准的必要性。