J Sport Rehabil. 2019 Oct 18;29(5):602-607. doi: 10.1123/jsr.2018-0236. Print 2020 Jul 1.
Some studies have discussed postoperative quadriceps strength recovery after anterior cruciate ligament reconstruction (ACLR). However, the effect of preoperative quadriceps strength deficit on longitudinal postoperative quadriceps strength recovery after ACLR with hamstring autograft is unknown.
To reveal the longitudinal postoperative quadriceps strength recovery after ACLR with hamstring autograft among patient groups stratified by preoperative quadriceps strength deficit.
Retrospective cohort study.
Single center.
In total, 420 patients (222 men and 218 women; age at the time of surgery 23.1 [8.9] y) who underwent ipsilateral ACLR with hamstring autograft and completed knee function tests preoperatively and 3, 6, and 12 months postoperatively were included in this study.
The authors measured quadriceps strength at 60°/s, tested 1-leg hop performance (distance and anxiety), and calculated the quadriceps strength index (QSI) and limb symmetry index for 1-leg hop distance. Patients were divided into the following 4 groups according to their preoperative QSI: >80% (Excellent group), 80% to 60% (Good group), 60% to 40% (Moderate group), and ≤40% (Poor group).
Postoperative QSI at 3, 6, and 12 months and 1-leg hop performance at 12 months after the surgery.
The Excellent group had the highest postoperative QSI at all periods. Based on the 1-leg hop performance, the Poor group had the lowest limb symmetry index and significantly greater anxiety during jump performance in comparison with the Excellent and Good groups.
The present study shows a longitudinal recovery process and the average postoperative quadriceps strength after ACLR with hamstring autograft in patient groups stratified by preoperative QSI. The results indicate that the difference in preoperative QSI affects not only the longitudinal postoperative QSI recovery but also high-level 1-leg hop performance after ACLR using hamstring autograft.
一些研究探讨了前交叉韧带重建（ACLR）后股四头肌力量的恢复情况。然而，ACL 重建术后使用自体腘绳肌腱重建时，术前股四头肌力量不足对纵向术后股四头肌力量恢复的影响尚不清楚。
揭示 ACLR 术后股四头肌力量的纵向恢复情况，将患者分为术前股四头肌力量不足的分组。
回顾性队列研究。
单中心。
共纳入 420 例患者（222 名男性和 218 名女性；手术时年龄 23.1[8.9]岁），这些患者均接受了同侧 ACLR 自体腘绳肌腱重建，并在术前和术后 3、6 和 12 个月完成了膝关节功能测试。
作者以 60°/s 的速度测量股四头肌力量，测试单腿跳跃表现（距离和焦虑），并计算股四头肌力量指数（QSI）和单腿跳跃距离的肢体对称性指数。根据术前 QSI，患者分为以下 4 组：＞80%（优秀组）、80%～60%（良好组）、60%～40%（中等组）和≤40%（较差组）。
术后 3、6 和 12 个月的 QSI 和术后 12 个月的单腿跳跃表现。
优秀组在所有时期的术后 QSI 最高。根据单腿跳跃表现，较差组的肢体对称性指数最低，在跳跃表现中焦虑程度显著高于优秀组和良好组。
本研究显示了 ACLR 术后使用自体腘绳肌腱重建股四头肌力量的纵向恢复过程和平均水平，以及根据术前 QSI 分层的患者组。结果表明，术前 QSI 的差异不仅影响纵向术后 QSI 的恢复，而且还影响 ACLR 术后使用自体腘绳肌腱重建后的高水平单腿跳跃表现。
