Objective To explore the effectiveness of arthroscopic repair of medial patellofemoral ligament (MPFL) in the treatment of traumatic patellar instability.
目的：探讨关节镜辅助下内侧髌股韧带（MPFL）修复术在治疗创伤性髌骨脱位中的效果。
To measure the tensile strength of the medial patellofemoral ligament(MPFL), and to evaluate the biomechanics of different fixation methods of the hamstring tendon graft on the patella.
探讨正常内侧髌股韧带（MPFL）的抗拉强度和自体肌腱移植重建MPFL不同固定方法的生物力学特性。
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