基于MS-FE模型探究排球运动员ACL应力分布情况

打开文本图片集

中图分类号：G842 文献标志码：A 文章编号：1000-4939（2025）03-0704-08

Abstract：ObjectiveBased on the muscular skeletal-finite element（MS-FE）model，we investigated the stress and strain distribution characteristics of anterior cruciate ligament（ACL）in the left leg at the moment of the volleyball player's dunking and landing.MethodsThe knee FEM of the volleyball player was established based on MRI and CT，and the marker point and ground reaction force of the volleyball player（male，23 years old， 88kg 1.95m ，dominant side：right side）were synchronously collected by the motion trapping system and the 3D force measuring table.The knee joint moments were calculated by the musculoskeletal model in OpenSim，and the joint moments were used as inputs to the finite element model to output ACL stresses and strains.Results The results of simulation analysis showed that at the moment when the vollyball player completed the dunking action and landed on the ground，the equivalent stress endured by the ACL reached 27.7MPa ，and from the viewpoint of stress distribution directionality，the maximum principal stress of the ACL was 8.2MPa at this time；in terms of strain response，the equivalent strain of the ACL reached 5.4% ，which reflected that it had a larger integrated deformation in all directions ；the maximum principal strain was 5.0% ，which further confirms that the ligament produced a significant elongation effect along the fibre direction；and the maximum shear strain was 7.6% ，indicating that the ACL also experienced a large lateral deformation during the landing stage.Conclusion The validated finite element model developed in this studycan beused to beter calculate the risk and prevention strategies of ACL injury in volleyball players landing on one leg after dunking the ball. This study can also be widely used in cartilage degradation etiology，optimization of rehabilitation training and simulationof knee surgery，which can provide efective methods for the clinical treatment of athletes and patients with ACL injuries.

Key words：knee joint；finite element modelling；musculoskeletal modeling；OpenSim；joint moment; ACL；volleyball snapping

膝关节在运动过程中承受着极高的生物力学载荷，因此其损伤发生率相对较高。（剩余13013字）