Three-dimensional finite element analysis of the influence of different surgical methods on the stress of meniscus and patellofemoral joint in the treatment of episodic patellar dislocation
10.3969/j.issn.1000-6710.2025.07.002
- VernacularTitle:不同手术方式治疗复发性髌骨脱位对半月板及髌股关节应力影响的三维有限元分析
- Author:
Biao XU
1
;
Tan LU
1
Author Information
1. 新乡医学院第一附属医院(河南卫辉 453100)
- Publication Type:Journal Article
- Keywords:
episodic patellar dislocation;
medial patellofemoral ligament reconstruction;
patellofemo-ral joint;
biomechanics;
finite element analysis
- From:
Chinese Journal of Sports Medicine
2025;44(7):521-529
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the influence of different surgical methods on the stress of knee me-niscus and patellofemoral joint surface of simulated episodic patellar dislocation using three-dimension-al finite element software under different flexion conditions.Methods The knee joint CT and MRI of pa-tients with episodic patellar dislocation were acquired and imported into Mimics and Geomagic to ex-tract the model,followed by the 0°,30°,60°,90° and 120° buckling construction using the Soild-works software.For each model,medial patellofemoral ligament reconstruction,medial retinaculum pli-cation,lateral retinaculum release,medial patellofemoral and patellotibial ligament reconstruction,as well as medial patellofemoral ligament reconstruction and lateral retinaculum release were conducted re-spectively.Finally,they were imported into the mechanical software Ansys for biomechanical analysis,and the stress results of knee meniscus and patellofemoral joint surface were output.Results The medi-al patellofemoral and patellotibial ligament reconstruction had the smallest meniscus peak stress com-pared with other methods.Moreover,it also exerted the smaller peak stress on the patellofemoral joint surface,along with the medial patellofemoral ligament reconstruction and the lateral retinaculum re-lease.Conclusion The medial patellofemoral and patellotibial ligament reconstruction can provide good patellofemoral contact stress and meniscus stress,effectively restore the stability of the knee joint.How-ever,medial patellofemoral ligament reconstruction and lateral retinaculum release can also provide bet-ter patellofemoral joint stress,but the meniscus stress is slightly higher,so we should be alert to the complications related to the meniscus after surgery.
