Biomechanical analysis of anterior cruciate ligament graftsubstitutes

摘要

We report the elastic properties of human normal anterior cruciateligament (ACL) in comparison with various ACL graft substitutes such ascentral or medial or lateral one third of patellar tendon,semitendinosus, meniscal tissues, tendoachilles, iliotibial band incigarette rolled, untwisted and different twisted forms for arthroscopyguided ACL reconstruction, using the double transducer ultrasonic pulsetransmission technique. The elasticity and rigidity parameters derived,were compared by taking ACL as being equal to 100 percent. Our resultsindicated that the strength of the graft substitute depended upon numberof collagen bundles per unit area and elastic properties depended uponthe pretensioning of the graft. The iliotibial band twisted six timeswas found to be isoelastic with normal ACL