Krzemińska Katarzyna, Czamara Andrzej
Centre of Rehabilitation and Medical Education, Wrocław, Poland.
College of Physiotherapy in Wroclaw, Wrocław, Poland.
Acta Bioeng Biomech. 2020;22(4):31-39.
The aim of the study was to assess the usefulness of isometric torque (IT) and peak torque (PT) of the hamstring to quadriceps muscles ratio (H/Q ratio) in monitoring the effectiveness of physiotherapy (PH) in males after ACLR.
The H/Q ratio is a diagnostic tool for monitoring of the effectiveness of the 6- month PH after ACLR.
Twenty males 6 months after ACLR (ACLR group) and 20 male controls underwent IT and PT (60°/s and 180°/s) bilateral measurements of H and Q muscles. The IT and PT were normalized to body mass, and expressed as relative IT (RIT) and relative PT (RPT). The RIT and RPT H/Q ratios, and Limb Symmetry Index (LSI) were calculated.
In the ACLR group, the RIT for the H and Q, the RIT for the H/Q ratio and most of the RPT, as well as the H/Q ratio, ROM and LSI values of the operated knee, were not significantly different (NSD) than those of the non-operated side (NOS) or the control group. The between-group comparison of the H/Q ratio for RIT and RPT weren't NSD. The isokinetic test at 180 °/s showed lower RPT, H/Q ratio and LSI values for the Q muscle than those of the NOS (p = 0.042, p = 0.001).
The H/Q ratio, in combination with the RIT, RPT and LSI, is a useful diagnostic tool for monitoring the effectiveness of 6-month PH after ACLR. Restoring the correct H/Q ratio can reduce the risk factor for ACL graft rupture.
本研究旨在评估绳肌与股四头肌等长扭矩（IT）和峰值扭矩（PT）的比值（H/Q比值）在监测前交叉韧带重建术（ACLR）后男性患者物理治疗（PH）效果方面的作用。
H/Q比值是监测ACLR后6个月PH效果的诊断工具。
对20名ACLR术后6个月的男性患者（ACLR组）和20名男性对照组进行双侧绳肌和股四头肌的IT和PT（60°/秒和180°/秒）测量。将IT和PT按体重进行标准化，并表示为相对IT（RIT）和相对PT（RPT）。计算RIT和RPT的H/Q比值以及肢体对称指数（LSI）。
在ACLR组中，患侧绳肌与股四头肌的RIT、H/Q比值的RIT以及大多数RPT，以及患侧膝关节的H/Q比值、活动度（ROM）和LSI值，与非患侧（NOS）或对照组相比无显著差异（NSD）。RIT和RPT的H/Q比值组间比较并非无显著差异。180°/秒的等速测试显示，股四头肌的RPT、H/Q比值和LSI值低于非患侧（p = 0.042，p = 0.001）。
H/Q比值结合RIT、RPT和LSI，是监测ACLR后6个月PH效果的有用诊断工具。恢复正确的H/Q比值可降低ACL移植物破裂的风险因素。
