Persistent isokinetic knee flexion strength deficits at the time of return to sport are not associated with a second ACL injury

IF 5 2区医学 Q1 ORTHOPEDICS

Knee Surgery, Sports Traumatology, Arthroscopy Pub Date : 2025-06-08 DOI:10.1002/ksa.12718

Axel Sundberg, Rebecca Hamrin Senorski, Johan Högberg, Ramana Piussi, Kristian Samuelsson, Roland Thomeé, Eric Hamrin Senorski

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引用次数: 0

Abstract

Purpose

To investigate the rate of a second anterior cruciate ligament (ACL) injury based on different levels of knee flexion strength limb symmetry index (LSI) at the time of return to sport (RTS) after ACL reconstruction with hamstring tendon autograft.

Methods

Data was extracted from a rehabilitation registry for patients aged 15–40 years, who participated in knee-strenuous sports pre-injury (Tegner ≥ 6) and underwent ACL reconstruction with hamstring tendon autograft. Isokinetic knee flexion strength was analysed and reported as LSI. Patients were categorised into three groups (≥90%, 80%–89.9% and <80%) based on their LSI at reported time of RTS. Patients were followed for 2 years after ACL reconstruction to record a second ACL injury, and hazard ratios (HR) were calculated using a Cox proportional hazards model.

Results

A total of 526 patients (48% female, mean age 22 ± 6) were included, with 51 (9.7%) second ACL injuries recorded within 2 years after ACL reconstruction. Among patients with LSI ≥ 90% (71%), 43 second ACL injuries (11.0%) occurred. The LSI 80%–89.9% group had 4 second ACL injuries (4.0%), and the LSI < 80% group had four injuries (8.2%). Persistent knee flexion strength asymmetry did not significantly influence the hazard of a second ACL injury. The LSI 80%–89.9% group had a lower hazard (HR 0.34, confidence interval [CI]: 0.12–0.94), while the LSI < 80% group showed no significant difference (HR 0.70, CI: 0.25–1.97) compared with the LSI ≥ 90% group.

Conclusion

Persistent isokinetic concentric knee flexion strength asymmetry at RTS were not associated with a second ACL injury.

Level of Evidence

Level III.

Abstract Image

查看原文本刊更多论文

在恢复运动时持续的等速膝关节屈曲力量不足与第二次前交叉韧带损伤无关。

目的：探讨自体腘绳肌腱重建前交叉韧带（ACL）后，在恢复运动（RTS）时不同程度的膝关节屈曲强度和肢体对称指数（LSI）对第二次前交叉韧带（ACL）损伤的影响。方法：数据来自15-40岁的康复登记患者，他们参加了膝关节剧烈运动损伤前（Tegner≥6），并接受了自体腘绳肌腱移植重建前交叉韧带。等速膝关节屈曲强度分析报告为LSI。结果：共纳入526例患者（女性48%，平均年龄22±6岁），其中51例（9.7%）在ACL重建后2年内发生第二次ACL损伤。LSI≥90%的患者（71%）中发生43例（11.0%）秒性ACL损伤。LSI 80%-89.9%组有4次第二次ACL损伤（4.0%），LSI结论：RTS持续等速同心性膝关节屈曲强度不对称与第二次ACL损伤无关。证据等级：三级。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Knee Surgery, Sports Traumatology, Arthroscopy 医学-外科

CiteScore

8.10

自引率

18.40%

发文量

418

审稿时长

2 months

期刊介绍： Few other areas of orthopedic surgery and traumatology have undergone such a dramatic evolution in the last 10 years as knee surgery, arthroscopy and sports traumatology. Ranked among the top 33% of journals in both Orthopedics and Sports Sciences, the goal of this European journal is to publish papers about innovative knee surgery, sports trauma surgery and arthroscopy. Each issue features a series of peer-reviewed articles that deal with diagnosis and management and with basic research. Each issue also contains at least one review article about an important clinical problem. Case presentations or short notes about technical innovations are also accepted for publication. The articles cover all aspects of knee surgery and all types of sports trauma; in addition, epidemiology, diagnosis, treatment and prevention, and all types of arthroscopy (not only the knee but also the shoulder, elbow, wrist, hip, ankle, etc.) are addressed. Articles on new diagnostic techniques such as MRI and ultrasound and high-quality articles about the biomechanics of joints, muscles and tendons are included. Although this is largely a clinical journal, it is also open to basic research with clinical relevance. Because the journal is supported by a distinguished European Editorial Board, assisted by an international Advisory Board, you can be assured that the journal maintains the highest standards. Official Clinical Journal of the European Society of Sports Traumatology, Knee Surgery and Arthroscopy (ESSKA).