Colorado Joint Replacement, Denver, CO 80210, USA.
J Arthroplasty. 2013 Mar;28(3):429-38. doi: 10.1016/j.arth.2012.07.019. Epub 2012 Dec 6.
From March 2006 to August 2008, 93 subjects (186 knees) underwent simultaneous bilateral total knee arthroplasty performed by eight surgeons at North American centers. This randomized study was conducted to determine whether non-weight-bearing passive flexion was superior for knees receiving a posterior stabilized high flexion device compared to a posterior stabilized standard device in the contra-lateral knee. Weight-bearing single leg active flexion was one secondary endpoint. Follow-up compliance was 92.5%. Results show small, but significant superiority in the motion metrics for the high flexion device compared to the standard device 12 months after surgery, especially for a subgroup of patients with pre-operative flexion less than 120° in both knees. Thus, the ideal candidate for the high flexion device may be one with lesser pre-operative flexion.
从 2006 年 3 月到 2008 年 8 月，93 名患者（186 个膝关节）在北美中心的 8 位外科医生的帮助下接受了同期双侧全膝关节置换术。这项随机研究旨在确定在对侧膝关节中，与后稳定标准装置相比，接受后稳定高屈曲装置的膝关节在非负重被动屈曲时是否具有优势。负重单腿主动屈曲是次要终点之一。随访依从率为 92.5%。结果显示，与标准装置相比，高屈曲装置在术后 12 个月的运动指标上具有较小但显著的优势，尤其是对于术前双膝屈曲小于 120°的亚组患者。因此，高屈曲装置的理想候选者可能是术前屈曲度较小的患者。
