Mesnard Guillaume, Fournier Gaspard, Cance Nicolas, Magnussen Robert A, Lustig Sébastien, Servien Elvire
Orthopaedics Surgery and Sports Medicine Department, FIFA Medical Center of Excellence, Croix-Rousse Hospital, Lyon University Hospital, Lyon, France.
Department of Orthopaedics, The Ohio State University, Columbus, Ohio, U.S.A.
Arthrosc Sports Med Rehabil. 2024 Dec 12;7(2):101063. doi: 10.1016/j.asmr.2024.101063. eCollection 2025 Apr.
To assess preoperative quadriceps and hamstring strength at various time points after anterior cruciate ligament (ACL) injury but before ACL reconstruction.
Patients who underwent isokinetic muscle strength testing before planned ACL reconstruction were included. Patients were placed in 1 of the following 3 groups on the basis of time from injury to testing: <3 months, 3 to 6 months, and 6 to 12 months. Among these 3 groups, hamstring and quadriceps limb symmetry index (LSI) and hamstring/quadriceps (H/Q) ratios were compared. A total of 100 patients were included (<3 months [n = 55]; 3-6 months [n = 31]; and 6-12 months [n = 14]).
There were no significant differences between patients in the 3 groups in regards to age, body mass index, or flexion range of motion, but there was a greater proportion of female patients in the 6 to 12 month group than the other groups. No significant differences in quadriceps or hamstring strength were noted among the 3 groups. H/Q ratio was significantly greater in the 6 to 12 month group than the less than 3 months and 3 to 6 months groups, with concentric testing at 240°/s. No correlation was found between patient sex and LSI or H/Q ratios.
Patients who underwent isokinetic muscle strength testing 6 to 12 months after ACL injury had a greater H/Q ratio at 240°/s than those who were testing within 6 months of injury. No differences in hamstring or quadriceps LSI were noted on the basis of time.
An understanding of the factors that influence preoperative isokinetic muscle strength testing (including time from injury to surgery) is important, given associations noted between preoperative strength and postoperative strength recovery after ACL reconstruction.
评估前交叉韧带（ACL）损伤后但在ACL重建术前不同时间点的股四头肌和腘绳肌力量。
纳入计划进行ACL重建术前接受等速肌力测试的患者。根据从受伤到测试的时间，将患者分为以下3组之一：<3个月、3至6个月、6至12个月。在这3组中，比较腘绳肌和股四头肌肢体对称指数（LSI）以及腘绳肌/股四头肌（H/Q）比率。共纳入100例患者（<3个月[n = 55]；3至6个月[n = 31]；6至12个月[n = 14]）。
3组患者在年龄、体重指数或屈曲活动范围方面无显著差异，但6至12个月组的女性患者比例高于其他组。3组之间股四头肌或腘绳肌力量无显著差异。在240°/s进行向心测试时，6至12个月组的H/Q比率显著高于<3个月组和3至6个月组。未发现患者性别与LSI或H/Q比率之间存在相关性。
ACL损伤后6至12个月接受等速肌力测试的患者，在240°/s时的H/Q比率高于受伤后6个月内进行测试的患者。根据时间，未发现腘绳肌或股四头肌LSI存在差异。
鉴于术前力量与ACL重建术后力量恢复之间的关联，了解影响术前等速肌力测试的因素（包括从受伤到手术的时间）很重要。
