PURPOSE Abnormal movement patterns and neuromuscular impairments at the ankle are thought to contribute to ankle joint degeneration in those with chronic ankle instability. However, these impairments are not confided to the ankle; rather, proximal neuromuscular deficiencies at the knee and aberrant movement patterns, thought to be responsible for reductions in knee joint health, have also been identified. While neuromuscular impairments and self-reported functional limitations have been examined in those with chronic ankle instability, patient-generated symptoms associated with joint health of the ankle and knee have not been investigated. Therefore, the purpose was to compare perceived ankle and knee joint health in individuals with and without chronic ankle instability. METHODS The Ankle Osteoarthritis Scale and the Knee Injury and Osteoarthritis Outcome Score assessed region-specific ankle and knee joint health. RESULTS Participants with chronic ankle instability reported more ankle pain (P < 0.001) and disability (P < 0.001) than the control group. Chronic ankle instability individuals also reported worse knee joint health (P < 0.05). CONCLUSIONS The increased symptomology associated with decreased ankle joint health further supports information demonstrating joint degeneration in young adults with chronic ankle instability. The decreased perceived knee joint health provides preliminary evidence of the negative impact proximal neuromuscular impairments associated with chronic ankle instability that may have on joints other than the ankle. Assessing subjective ankle and knee joint function can guide clinicians in developing individualized rehabilitation by providing them with an understanding if a patient presenting with chronic ankle instability suffers from symptoms arising from more than just the ankle. LEVEL OF EVIDENCE Case-control, Level III.

中文翻译：

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慢性踝关节不稳患者的踝关节和膝关节健康状况下降。

目的踝关节异常运动模式和神经肌肉损伤被认为是慢性踝关节不稳定患者的踝关节退化的原因。但是，这些损伤并不局限于脚踝。确切地说，还发现了膝盖近端神经肌肉缺陷和异常运动模式，认为这可能导致膝关节健康下降。尽管已经对患有慢性踝关节不稳的患者进行了神经肌肉损伤和自我报告的功能限制，但尚未研究患者产生的与踝关节和膝关节健康相关的症状。因此，目的是比较患有和不患有慢性踝关节不稳的人的踝关节和膝关节健康状况。方法踝骨关节炎量表和膝关节损伤和骨关节炎结果评分评估了特定区域的踝关节和膝关节的健康状况。结果慢性踝关节不稳的参与者报告踝关节疼痛（P <0.001）和残疾（P <0.001）比对照组多。慢性踝关节不稳患者也报告膝关节健康状况较差（P <0.05）。结论与踝关节健康下降相关的症状增加，进一步支持了证实慢性踝关节不稳的年轻成年人关节变性的信息。膝关节健康状况的下降提供了与慢性踝关节不稳相关的近端神经肌肉损伤的负面证据的初步证据，慢性踝关节不稳可能会对踝关节以外的其他关节造成影响。评估主观的踝关节和膝关节功能可以指导临床医生进行个性化康复，方法是让临床医师了解患有慢性踝关节不稳的患者是否仅因踝关节而出现症状。证据级别病例对照，三级。