摘要
目的对膝关节前交叉韧带（ACL）进行生物力学分析，探讨ACL的生物力学作用。方法建立膝关节三维有限元模型，施加1150N的轴向压力和100N胫骨前向力，对膝关节进行以下2个方面生物力学分析：具有完整ACL的膝关节、切除ACL的膝关节。结果ACL完整时，胫骨水平前向移位4．5mm，ACL承受全部前向负荷的78％，轴向负荷的57％由膝关节外侧间室承载。切断ACL后，胫骨水平前向位移增至16．5mm，轴向负荷70％由内侧间室承载，半月板及关节软骨应力增大。结论ACL为限制胫骨前移的首要的结构，ACL切除后，膝关节明显不稳定，因此在ACL损伤后要及时修复以恢复膝关节正常的功能。
Objective To analyze the biomechanics of the anterior cruciate ligament （ACL）. Methods An intact three-dimensional finite model of knee joint was established. With the model to have a finite dement analysis of biomechanics of the knee joint. Two cases were simulated under a axial compres- sive load of 1150 N and an anterior tibial load of 134 N：a knee with：（a） Native ACL, （b） No ACL. Re- suits With native ACL, the tibia shift forward 4. 5 mm, the ACL bears 78% of the anterior tibial load, and the lateral compartment bears 57% of the axial compressive load. With no ACL,the tibia shift forward 16. 5 mm, and the medial compartment bears 70% of the axial compressive load, the stress of the menisci and cartilage increased. Conclusion The ACL is the principle structure in retaining stability of the knee joint, it is essential to be adequately repaired or replaced after injury to restore its normal function.
出处
《中华实验外科杂志》
CAS
CSCD
北大核心
2013年第4期796-798,共3页
Chinese Journal of Experimental Surgery
基金
山东省自然科学基金资助项目（Y2008C20）
关键词
膝关节
前交叉韧带
有限元分析
生物力学
Knee joint
Anterior cruciate ligament
Finite element analysis
Biomechanics
