Mitamura Shingo, Kataoka Akito, Warashina Hideki
Rehabilitation, Nagoya Joint Replacement and Orthopedic Clinic, Kitanagoya, JPN.
Orthopedic Surgery, Nagoya Joint Replacement and Orthopedic Clinic, Kitanagoya, JPN.
Cureus. 2025 Jun 1;17(6):e85201. doi: 10.7759/cureus.85201. eCollection 2025 Jun.
This study investigated the difference in lower limb function between supinated and neutral foot postures in patients with knee osteoarthritis (KOA) scheduled for total knee arthroplasty (TKA).
This study included 62 female patients with KOA knees. Patients were classified into the neutral foot posture group (n = 33 (53%)) and the supinated foot posture group (n = 29 (47%)) using the Foot Posture Index-6 (FPI-6). Femorotibial angle (FTA), knee flexion range of motion (ROM), ankle dorsiflexion ROM, knee extension strength, toe grip strength (TGS), Timed Up and Go (TUG) Test, and knee pain were compared between the two groups.
The supinated foot posture group had significantly lower knee flexion ROM, ankle dorsiflexion ROM, knee extension strength, TGS, and larger FTA than those in the neutral foot posture group. However, no significant differences were observed in TUG or knee pain.
KOA patients with supinated feet have reduced lower limb strength and ROM, suggesting that incorporating foot alignment assessment into KOA rehabilitation is important. However, long-term studies are needed to clarify causal relationships.
本研究调查了计划进行全膝关节置换术（TKA）的膝关节骨关节炎（KOA）患者中，旋后足姿势与中立足姿势在下肢功能上的差异。
本研究纳入了62例患有KOA膝关节的女性患者。使用足部姿势指数-6（FPI-6）将患者分为中立足姿势组（n = 33（53%））和旋后足姿势组（n = 29（47%））。比较两组之间的股胫角（FTA）、膝关节屈伸活动范围（ROM）、踝关节背屈ROM、膝关节伸展力量、足趾握力（TGS）、计时起立行走（TUG）测试和膝关节疼痛情况。
旋后足姿势组的膝关节屈伸ROM、踝关节背屈ROM、膝关节伸展力量、TGS均显著低于中立足姿势组，且FTA更大。然而，在TUG测试或膝关节疼痛方面未观察到显著差异。
旋后足的KOA患者下肢力量和ROM降低，这表明将足部对线评估纳入KOA康复中很重要。然而，需要长期研究来阐明因果关系。
