Clinical study of the femur footprint center positioning in the ACL single-bundle anatomical reconstruction
XU Cong, WANG Yong-wei，LI Jia, CAO Xiang-yu，LIU Wen-tao, DU Yuan-liang, DAI Hai-feng, LIU Qing-chen, LV Yong-ming
Chinese Journal of Clinical Anatomy ›› 2016, Vol. 34 ›› Issue (6) : 685-688.
Clinical study of the femur footprint center positioning in the ACL single-bundle anatomical reconstruction
Objective To explore the effective femur tunnel positioning method and primary clinical results in arthroscopic single-bundle anterior cruciate ligament (ACL) reconstruction after the acute anterior cruciate ligament (ACL) rupture. Methods All patients with ACL rupture were evaluated after arthroscopic single-bundle ACL reconstruction by means of the autogenous semitendinosus and gracilis tendons and footprint center positioning method in the femur tunnel. The accuracy of the above-mentioned techniques was intra-operatively evaluated through observing the bone marks of lateral femoral epicondyle， and the drawer test，Lachman test, Pivot-shift test, the Lysholm, Tegner and international knee documentation committee (IKDC) scores were used to estimate knee joint function and stability before and after ACL reconstruction. Results (1)the lateral femoral epicondyle was found in all the patients during ACL reconstruction, but the resident ridge was found in only 48 patients. (2)after 3 and 24 months of ACL reconstruction, the negative rate was 79%, 77% for the drawer test, 80%, 71% for the Lachman test and 97%, 95% for the pivot shift test.(3) there were significant differences in Lysholm,Tegner,IKDC scores compared with that prior to ACL reconstruction (P<0.01). Conclusion The femur footprint center positioning method in the ACL single-bundle reconstruction provides enough knee joint stability and satisfactory clinical results, but the remnant preservation of ligament in the femur footprint is essential and importantly depended on. While the lateral femoral epicondyle can be easily found, that is not the case for the resident ridge.
anterior cruciate ligament (ACL) / femur tunnel / semitendinosus and gracilis tendons / anatomic reconstruction
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