Musculoskeletal Research Centre, La Trobe University, Melbourne, Victoria 3086, Australia.
Br J Sports Med. 2012 Apr;46(5):355-9. doi: 10.1136/bjsm.2010.080770. Epub 2011 Apr 20.
The external knee adduction moment during gait has previously been associated with knee pain and osteoarthritis (OA). Recently, the knee adduction moment has been shown to be increased following anterior cruciate ligament (ACL) reconstruction surgery and has been suggested as a potential mechanism for the progression of early onset knee OA in this population. No study has investigated the gender differences in gait biomechanics following ACL reconstruction.
To examine gender differences in gait biomechanics following ACL reconstruction surgery.
36 subjects (18 females, 18 males) who had previously undergone ACL reconstruction surgery (mean time since surgery 20 months) underwent gait analysis at a self-selected walking speed. Males and females were well matched for age, time since surgery and walking speed. Maximum flexion and adduction angles and moments were recorded during the stance phase of level walking and compared between the male and female groups.
The knee adduction moment was 23% greater in the female compared with the male ACL group. No gender differences were seen in the sagittal plane. No differences were seen between the reconstructed and contralateral limb.
The higher knee adduction moment seen in females compared with males may suggest an increased risk for the development of OA in ACL-reconstructed females.
膝关节外展力矩在步态中曾与膝关节疼痛和骨关节炎（OA）相关。最近，前交叉韧带（ACL）重建术后发现膝关节内收力矩增加，并被认为是该人群早期膝关节 OA 进展的潜在机制。尚无研究调查 ACL 重建术后步态生物力学的性别差异。
探讨 ACL 重建术后步态生物力学的性别差异。
36 名受试者（18 名女性，18 名男性）曾接受 ACL 重建手术（术后平均时间 20 个月），以自我选择的步行速度进行步态分析。男性和女性在年龄、手术时间和步行速度方面匹配良好。在水平步行的支撑相期间记录最大屈曲和内收角度和力矩，并在男性和女性组之间进行比较。
女性 ACL 组的膝关节内收力矩比男性组高 23%。矢状面没有性别差异。在重建侧和对侧肢体之间没有差异。
与男性相比，女性膝关节内收力矩较高，可能表明 ACL 重建女性发生 OA 的风险增加。
