Ng F Y, Wong H L, Yau W P, Chiu K Y, Tang W M
Department of Orthopaedic and Traumatology, Queen Mary Hospital, The University of Hong Kong, No. 102, Pokfulam Road, Pokfulam, Hong Kong.
Int Orthop. 2008 Dec;32(6):795-8. doi: 10.1007/s00264-007-0409-7. Epub 2007 Sep 22.
The purpose of this study was to compare the range of motion after standard version posterior stabilised TKR and high-flexion version TKR in patients receiving bilateral total knee replacement. Thirty-five patients were recruited. The range of motion of the knees was measured clinically with a goniometer in both the pre-operative period and the most recent follow-up. It was found that the pre-operative range of motion was comparable in the two groups. The average post-operative flexion was 105 degrees +/- 13 degrees in the standard version group and 106 degrees +/- 14 degrees in the high-flexion design group (p = 0.201, paired t-test; beta error = 0.073). A slight loss in flexion was observed in the standard version group (0.5 degrees ) as opposed to a slight gain in the high-flexion design group (2 degrees ). However, this was not statistically significant (p = 0.251, paired t-test; beta error = 0.105).
本研究的目的是比较接受双侧全膝关节置换术的患者在接受标准型后稳定型全膝关节置换术（TKR）和高屈曲型TKR后膝关节的活动范围。招募了35名患者。在术前和最近一次随访时，均使用角度计对膝关节的活动范围进行临床测量。结果发现，两组患者术前的活动范围相当。标准型组术后平均屈曲角度为105度±13度，高屈曲型设计组为106度±14度（p = 0.201，配对t检验；Ⅱ类错误= 0.073）。标准型组观察到屈曲角度略有下降（0.5度），而高屈曲型设计组则略有增加（2度）。然而，这在统计学上并不显著（p = 0.251，配对t检验；Ⅱ类错误= 0.105）。
