膝内侧骨关节炎患者膝关节功能与不稳定性的关系

背景：膝内侧骨关节炎患者身体缺陷与骨性关节炎发展的关系尚不清楚。目的：调查膝内侧骨关节炎患者的身体功能和膝关节不稳定性,探讨二者间的关系。方法：纳入诊断性膝内侧骨关节炎患者104例,采用膝关节日常生活活动评估量表衡量膝关节不稳,功能的自我评估采用膝伤和骨性关节炎结果评分,应用计时爬梯试验评估基于体能的身体功能,并进行放射影像学评估。结果与结论：不同程度膝关节不稳患者的内侧松弛度、外侧松弛度、对线角度、标准化最大随意等长收缩及爬梯时间比较差异无显著性意义（P〉0.05）。但不同程度膝关节不稳患者在疼痛、症状、日常生活活动、运动和膝关节相关生活质量子集得分方面差异有显著性意义（P〈0.05）。在膝内侧骨关节炎患者中,自报膝关节不稳与内侧松弛度、股四头肌无力、内翻对线无直接联系。

Relationship between the function and instability of the knee joint in patients with medial knee osteoarthritis

BACKGROUND： The relationship between physical defects and the development of medial knee osteoarthritis is not clear. OBJECTIVE： To study the relationship between the physical function and the instability of knee joint in the patients with medial knee osteoarthritis. METHODS： 104 patients diagnosed with medial knee osteoarthritis were included, knee outcome survey-activities of daily living scale was used to measure knee joint instability, functional self-assessment was performed with the knee injury and osteoarthritis score, body functions based on physical assessment was evaluated by timing ladder test, and the radiographic evaluation was performed. RESULTS AND CONCLUSION： There was no significant difference of medial laxity, lateral laxity, diagonal, standardized maximal voluntary isometric contraction and stair climbing time between the patients with different degrees of knee instability （P 〉 0.05）. While there was significant difference of pain, symptoms, activities of daily living, sports scores and the subsets of quality of life between the patients with different degrees of knee instability （P 〈 0.05）. There was no direct correlation between the self-reported knee instability and the medial laxity, quadriceps femoris weakness and varus alignment in the patients with medial knee osteoarthritis.