Bennett D, Ogonda L, Elliott D, Humphreys L, Beverland D E
Gait Analysis Laboratory, Musgrave Park Hospital, Stockmans Lane, Belfast BT9 7JB, Ireland.
Gait Posture. 2006 Apr;23(3):374-82. doi: 10.1016/j.gaitpost.2005.04.008. Epub 2005 Jun 24.
Minimally invasive (MI) total hip replacement (THR) supposedly provides improved ambulation in the immediate post-operative period. This study used a prospective blinded design to analyse early post-operative walking ability using gait analysis. Seventeen patients were available for full analysis with nine having had the MI technique and eight having the standard incision (SI) technique. Patients were blinded as to the incision used, as were all physiotherapists and assessors. Differences in temporal-spatial variables and joint kinematics measured 1 day pre-operatively, 2 days post-operatively and 42 days (6 weeks) post-operatively were compared between groups. There was no significant difference in velocity, step length of the affected or unaffected leg, stride length or stance phase duration between the MI and SI groups between any of the timepoints tested. There was no significant improvement in the gait kinematics of the MI group compared to the SI group either 2 days post-operatively or 6 weeks post-operatively. Contrary to previous studies, there was no improvement in early post-operative gait for those patients who received THR using the minimally invasive technique.
微创全髋关节置换术（THR）据称可在术后即刻改善患者的行走能力。本研究采用前瞻性盲法设计，通过步态分析来分析术后早期的行走能力。17名患者可供进行全面分析，其中9名采用了微创技术，8名采用了标准切口（SI）技术。患者对所采用的切口不知情，所有物理治疗师和评估人员也不知情。比较了两组患者术前1天、术后2天和术后42天（6周）测量的时空变量和关节运动学差异。在任何测试时间点，微创组和标准切口组之间在速度、患侧或健侧腿的步长、步幅或站立期持续时间方面均无显著差异。与标准切口组相比，微创组在术后2天或术后6周的步态运动学方面均无显著改善。与先前的研究相反，接受微创技术全髋关节置换术的患者术后早期步态并无改善。
