Soma Yuichiro, Mutsuzaki Hirotaka, Yoshioka Tomokazu, Kubota Shigeki, Shimizu Yukiyo, Kanamori Akihiro, Yamazaki Masashi
Department of Rehabilitation Medicine, University of Tsukuba Hospital, Japan.
Department of Orthopaedic Surgery, Ibaraki Prefectural University of Health Sciences Hospital: 4669-2 Ami, Inashiki-gun, Ibaraki 300-0394, Japan.
J Phys Ther Sci. 2021 Jan;33(1):84-88. doi: 10.1589/jpts.33.84. Epub 2021 Jan 5.
[Purpose] The aim of this report was to describe the safety, feasibility, and efficacy of rehabilitation by knee extension and flexion training using the knee single-joint hybrid assistive limb in a patient after anterior cruciate ligament reconstruction. [Participant and Methods] A 33 year-old male underwent an arthroscopic procedure for anatomic single-bundle anterior cruciate ligament reconstruction with a semitendinosus tendon autograft. Rehabilitation training using the knee single-joint hybrid assistive limb was initiated at postoperative week 18 and repeated weekly for 3 weeks. The patient performed five sets of the knee single-joint hybrid assistive limb-assisted knee-extension-flexion exercises per session at a frequency of 10 exercises/set. [Results] The peak extension torque at all velocities with the limb symmetry index was higher after the hybrid assistive limb intervention (post-intervention) than before using it (pre-intervention). Peak flexion torques at 60°/s and 300°/s of limb symmetry index were higher post-intervention than pre-intervention. The range of motion in extension and flexion improved from -2° (pre-intervention) to -1° (post-intervention) and from 124° to 133°, respectively. The Lysholm score increased from 58 (pre-intervention) to 94 (post-intervention). [Conclusion] The knee single-joint hybrid assistive limb can be used safely for anterior cruciate ligament reconstruction training, without any adverse events. Our results indicate that the knee single-joint hybrid assistive limb training may improve muscle function, effectively overcoming dysfunction.
[目的] 本报告旨在描述在一名前交叉韧带重建术后患者中，使用膝关节单关节混合辅助肢体进行屈伸训练的安全性、可行性和有效性。[参与者与方法] 一名33岁男性接受了关节镜下解剖单束前交叉韧带重建术，采用半腱肌腱自体移植。术后第18周开始使用膝关节单关节混合辅助肢体进行康复训练，每周重复一次，共3周。患者每次进行五组膝关节单关节混合辅助肢体辅助的屈伸练习，每组频率为10次练习。[结果] 混合辅助肢体干预后（干预后），所有速度下的峰值伸展扭矩和肢体对称指数均高于使用前（干预前）。干预后肢体对称指数在60°/秒和300°/秒时的峰值屈曲扭矩高于干预前。伸展和屈曲的活动范围分别从-2°（干预前）改善到-1°（干预后），从124°改善到133°。Lysholm评分从58分（干预前）提高到94分（干预后）。[结论] 膝关节单关节混合辅助肢体可安全用于前交叉韧带重建训练，无任何不良事件。我们的结果表明，膝关节单关节混合辅助肢体训练可能改善肌肉功能，有效克服功能障碍。
