McGuire Ryan, Swann William, Jurjans John, Parker Clare, Pawley Madison, Uhl Tim
Department of Physical Therapy University of Kentucky.
Sports Rehabilitation University of Kentucky.
Int J Sports Phys Ther. 2025 Apr 1;20(4):503-513. doi: 10.26603/001c.132382. eCollection 2025.
Individuals following anterior cruciate ligament reconstruction (ACLR) are at increased risk for subsequent anterior cruciate ligament (ACL) injury, with quadriceps strength deficits being a risk factor. While early measures of quadriceps strength can predict strength in the later stages of rehabilitation, it remains unclear whether isometric rate of torque development (RTD) is related to later outcomes. The purpose of this study was to examine the correlation between quadriceps RTD values at four months post-ACLR and quadriceps isokinetic peak torque values at six months post-ACLR. It was hypothesized that isometric RTD at four months would be significantly correlated with isokinetic peak torque at six months post-ACLR. A secondary hypothesis was that the involved limb RT would be significantly slower than the uninvolved limb at four months post-operative.
Retrospective case series.
Forty-seven patients (22 males and 25 females) who had undergone ACLR performed isometric testing at four months and isokinetic testing at six months post-operatively. Isometric testing was utilized to measure torque from 0-100ms (RTD) and from 100-200ms (RTD), and isometric peak torque. Isokinetic testing was utilized to measure peak torque at 60°/sec and 180°/sec. Correlations between isometric and isokinetic measures were evaluated using Spearman's rho. RTD was compared between the involved and uninvolved limbs.
The four-month measures of RTD (r=.55, r=.45), RTD (r=.63, r=.52), and peak isometric torque (r=.77, r=.64) were all significantly correlated with 60°/sec and 180°/sec isokinetic peak torque (p≤0.001), respectively. The involved limb rate of torque development was slower, and strength was lower than the uninvolved limb (p<0.001).
The hypotheses were supported as four-month isometric measures were moderately to strongly correlated to six-month isokinetic peak torque measures and the involved limb RTD was slower than the uninvolved limb. Incorporation of interventions focusing on development of force quickly is encouraged during rehabilitation.
3b.
前交叉韧带重建术（ACLR）后的个体发生后续前交叉韧带（ACL）损伤的风险增加，股四头肌力量不足是一个风险因素。虽然股四头肌力量的早期测量可以预测康复后期的力量，但等长扭矩发展速率（RTD）是否与后期结果相关仍不清楚。本研究的目的是检验ACLR术后四个月时股四头肌RTD值与ACLR术后六个月时股四头肌等速峰值扭矩值之间的相关性。研究假设为术后四个月时的等长RTD与术后六个月时的等速峰值扭矩显著相关。第二个假设是术后四个月时患侧肢体的RTD显著慢于未患侧肢体。
回顾性病例系列研究。
47例接受ACLR的患者（22例男性和25例女性）在术后四个月进行等长测试，在术后六个月进行等速测试。等长测试用于测量0至100毫秒（RTD）和100至200毫秒（RTD）的扭矩以及等长峰值扭矩。等速测试用于测量60°/秒和180°/秒时的峰值扭矩。使用Spearman秩相关系数评估等长和等速测量之间的相关性。比较患侧和未患侧肢体的RTD。
四个月时的RTD（r = 0.55，r = 0.45）、RTD（r = 0.63，r = 0.52）和等长峰值扭矩（r = 0.77，r = 0.64）测量值分别与60°/秒和180°/秒的等速峰值扭矩显著相关（p≤0.001）。患侧肢体的扭矩发展速率较慢，力量低于未患侧肢体（p < 0.001）。
研究假设得到支持，因为四个月时的等长测量值与六个月时的等速峰值扭矩测量值中度至高度相关，且患侧肢体的RTD慢于未患侧肢体。鼓励在康复过程中纳入注重快速力量发展的干预措施。
3b。
