Burnham Robert R, Bialek Samantha E, Wozniak Amy, Brown Nicholas M
Department of Orthopaedic Surgery & Rehabilitation, Loyola University Medical Center, 2160 S. First Avenue, Maguire Suite 1700, Maywood, IL, 60153, USA.
Stritch School of Medicine, Loyola University Chicago, 2160 S. First Avenue, Maywood, IL, 60153, USA.
Knee Surg Relat Res. 2020 Jun 5;32(1):26. doi: 10.1186/s43019-020-00044-5.
The aim of this study was to determine if contralateral knee range of motion is associated with postoperative range of motion in the operative knee after total knee arthroplasty.
Contralateral (nonoperative) knee range of motion was compared to postoperative knee range of motion after total knee arthroplasty using linear regression models in 59 patients who had undergone primary total knee arthroplasty with a minimum of 4 months postoperative follow-up data (range 4-13 months).
A strong linear relationship was observed between contralateral knee ranges of motion of 115° or greater and postoperative knee ranges of motion after total knee arthroplasty (slope 0.93, 95% CI 0.58-1.29, P < 0.0001), with a mean difference of -7.44° (95% CI -10.3 to -4.63, P < 0.0001). However, there was no association between contralateral knee range of motion and postoperative knee range of motion when contralateral knee range of motion was less than 115°.
Contralateral knee range of motion of 115° or greater correlates linearly with postoperative range of motion after total knee arthroplasty, and thus may be predictive in such cases.
本研究旨在确定全膝关节置换术后对侧膝关节活动范围是否与手术膝关节的术后活动范围相关。
采用线性回归模型，对59例行初次全膝关节置换术且术后随访至少4个月（4 - 13个月）的患者，比较对侧（非手术）膝关节活动范围与全膝关节置换术后膝关节活动范围。
观察到对侧膝关节活动范围在115°及以上与全膝关节置换术后膝关节活动范围之间存在强线性关系（斜率0.93，95%可信区间0.58 - 1.29，P < 0.0001），平均差异为 -7.44°（95%可信区间 -10.3至 -4.63，P < 0.0001）。然而，当对侧膝关节活动范围小于115°时，对侧膝关节活动范围与术后膝关节活动范围之间无关联。
对侧膝关节活动范围在115°及以上与全膝关节置换术后的活动范围呈线性相关，因此在这类情况下可能具有预测性。
