ACL损伤损伤l重要的静力稳定结构 l损伤致膝关节不稳 继发半月板损伤、骨关节炎形成l合并其他结构损伤早期重建（2周）l单纯损伤可晚期重建（6周）ACL 损伤机制损伤机制l共同因素l接触性损伤:l外翻外旋应力外翻外旋应力l过伸过伸l胫骨后方直接暴力胫骨后方直接暴力l非接触性损伤:l骤停骤停l纵向暴力纵向暴力,剪切剪切,或旋转暴力或旋转暴力ACL解剖解剖l ACL 2个纤维主束:前内束前内束(AM)后外束后外束(PL)ACL解剖解剖FIGURE.(A)Tibial insertion sites of AM and PL bundles.(Lat men,lateral meniscus.)(B)Femoral insertion sites of AM and PL bundles.(C)Normal ACL shows 2 distinct bundles:AM and PL.(D)Crossing pattern of AM and PL bundles,with knee in 110 of flexion.This has been described by some auth
