前交叉韧带重建术后侧切动作的生物力学特征
Biomechanics during cutting movement in individuals after anterior cruciate ligament reconstruction
任爽 1时会娟 1梁子轩 1张思 1胡晓青 1黄红拾 1敖英芳1
作者信息
- 1. 北京大学第三医院运动医学科,北京大学运动医学研究所,运动医学关节伤病北京市重点实验室,运动创伤治疗技术与器械教育部工程研究中心,北京 100191
- 折叠
摘要
目的:探究前交叉韧带(anterior cruciate ligament,ACL)重建术后12个月左右的患者在侧切动作过程中的生物力学特征,确定主要的异常生物力学特征及其机制.方法:对16例ACL重建术后12个月左右的患者同步采集侧切动作过程中的运动学和动力学参数,计算膝关节的三维角度和三维力矩.应用配对t检验方法分析重建侧与未伤侧之间的生物力学特征差异.结果:在侧切动作过程中,ACL重建侧的水平向后地面反作用力峰值(ACL重建侧0.380±0.071,未伤侧0.427±0.069,P=0.003)和垂直向上地面反作用力峰值(ACL重建侧1.996±0.202,未伤侧2.110±0.182,P=0.001)均显著小于未伤侧.与未伤侧相比,重建侧的膝关节屈曲角度较小(ACL重建侧38.3°±7.4°,未伤侧42.8°±7.9°,P＜0.001),而外旋角度较大(ACL重建侧10.3°±2.4°,未伤侧7.7°±2.1°,P=0.008).ACL重建侧的膝关节伸展力矩峰值(ACL重建侧0.092±0.031,未伤侧0.133±0.024,P＜0.001)和外旋力矩峰值(ACL重建侧0.005±0.004,未伤侧0.008±0.004,P=0.015)均显著小于未伤侧.结论:在侧切动作过程中,ACL重建患者膝关节运动主要在矢状面和水平面内呈现不对称特征,重建侧呈现较小的屈膝角度、膝关节伸展力矩和外旋力矩和较大的膝关节外旋角度.
Abstract
Objective:To evaluate knee biomechanics of patients about 12 months after anterior cruciate ligament(ACL)reconstruction during cutting and determine the abnormal biomechanical characteristics.Methods:Sixteen males about 12 months after ACL reconstruction were recruited for this study.Three-dimensional kinematic and kinetic data were collected during cutting movement.Knee joint angles and moments were calculated.Paired t-tests were used to compare the differences in knee biomechanics be-tween the surgical leg and nonsurgical leg.Results:The peak posterior ground reaction force(surgical leg:0.380±0.071;nonsurgical leg:0.427±0.069,P=0.003)and vertical ground reaction force(surgical leg:1.996±0.202,nonsurgical leg:2.110±0.182,P=0.001)were significantly smaller in the surgical leg than in the nonsurgical leg.When compared with the uninjured leg,the surgical leg demonstrated a smaller knee flexion angle(surgical leg:38.3°±7.4°;nonsurgical leg:42.8°±7.9°,P＜0.001)and larger external rotation angle(surgical leg:10.3°±2.4°;nonsurgical leg:7.7°±2.1°,P=0.008).The surgical leg also demonstrated a smaller peak knee extension moment(surgical leg:0.092±0.031;nonsurgical leg:0.133±0.024,P＜0.001)and peak knee external rotation moment(surgical leg:0.005±0.004;nonsurgical leg:0.008±0.004,P=0.015)when com-pared with the nonsurgical leg.Conclusion:The individuals with ACL reconstruction mainly showed asymmetrical movements in the sagittal and horizontal planes.The surgical leg demonstrated a smaller peak knee flexion angle,knee extension moment,and knee external rotation moment,with greater knee external rotation angle.
关键词
前交叉韧带重建/侧切动作/生物力学/术后康复Key words
Anterior cruciate ligament reconstruction/Side-cutting/Biomechanics/Postoperative re-habilitation引用本文复制引用
基金项目
国家自然科学基金(31900943)
国家自然科学基金(31900961)
北京大学医学部教育教学研究基金(2020YB44)
北京大学第三医院优秀留学回国人员科研启动基金(BYSYLXHG2020007)
北京大学医学部青年培育基金(BMU2021PY001)
出版年
2024
国家科技期刊平台
NSTL
万方数据