慢性踝关节不稳定患者的踝关节肌力变化特征研究

发布时间：2018-11-26 13:04

【摘要】：目的:探讨慢性踝关节不稳患者的外翻肌/内翻肌和背屈肌/跖屈肌离心峰值力矩比值是否发生变化。方法:选取24名慢性踝关节不稳受试者作为实验组,同时选取24名年龄、身高、体重、性别和身体活动水平与实验组相匹配的受试者作为对照组。运用等速测力系统,对两组受试者右侧踝关节外翻肌、内翻肌、背屈肌和跖屈肌在不同角速度下(60°/s和120°/s)离心收缩的峰值力矩进行测量,并计算出外翻/内翻和背屈/跖屈离心峰值力矩的比值。结果:在角速度为60°/s和120°/s下,实验组的外翻、内翻和跖屈峰值力矩明显低于对照组(P0.05),而背屈离心峰值力矩无显著差异(P0.05);此外,实验组的外翻/内翻离心峰值力矩比值明显低于对照组(P0.05),而实验组的背屈/跖屈离心峰值力矩比值显著高于对照组(P0.05)。结论:在角速度为60°/s和120°/s下,慢性踝关节不稳患者的外翻/内翻离心峰值力矩比值显著降低,而背屈/跖屈离心峰值力矩比值显著增加,其机制可能是慢性踝关节不稳患者的外翻、内翻和跖屈的离心峰值力矩下降所致。所以,外翻肌、内翻肌和跖屈肌的离心肌力减弱可能会导致踝关节外侧韧带的重复性损伤。
[Abstract]:Objective: to investigate whether the ratio of eccentric peak torque of valgus / varus muscle and flexor dorsi / metatarsal flexor is changed in patients with chronic ankle instability. Methods: 24 subjects with chronic ankle instability were selected as experimental group and 24 subjects matched with experimental group in age, height, weight, sex and physical activity level as control group. Using the isokinetic force measuring system, the peak moment of eccentric contraction of the right varus muscle, flexor dorsi muscle and flexor metatarsus muscle at different angular velocities (60 掳/ s and 120 掳/ s) were measured in two groups. The ratio of centrifugal peak moment of valgus / varus and dorsiflexion / plantar flexion was calculated. Results: at angular velocities of 60 掳/ s and 120 掳/ s, the peak torque of valgus, varus and plantar flexion in the experimental group was significantly lower than that in the control group (P0.05), but there was no significant difference in the eccentric peak torque of dorsal flexion (P0.05). In addition, the ratio of peak moment of valgus / varus centrifugation in the experimental group was significantly lower than that in the control group (P0.05), while the ratio of eccentric peak torque in the experimental group was significantly higher than that in the control group (P0.05). Conclusion: at angular velocities of 60 掳/ s and 120 掳/ s, the ratio of valgus / varus centrifugal peak torque in patients with chronic ankle instability was significantly decreased, while the ratio of eccentric peak torque of dorsal flexion and metatarsal flexion was significantly increased. The mechanism may be the decrease of eccentric peak torque of valgus, varus and metatarsal flexion in patients with chronic ankle instability. Therefore, the abatement of the eccentric muscle of the varus muscle, the varus muscle and the flexor metatarsus may lead to repeated injury of the lateral ligament of the ankle joint.
【作者单位】：燕山大学体育学院;
【基金】：河北省社会科学基金项目(编号:HB17TY021)
【分类号】：G804.2

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