Objective: To study the clinical effect of anatomical reconstruction of the posterolateral structure of the knee joint under arthroscopy.

Methods: The patients who were admitted to hospital for the treatment of posterolateral structural injuries of the knee joint, including those with other ligament injuries (combined with anterior and posterior cruciate ligament injuries and medial collateral ligament injuries) were subjected to arthroscopic reconstruction of the posterolateral structures. Carry out preoperative and postoperative evaluations, and conduct preoperative and postoperative comparative studies to clarify the clinical effect of the procedure.

Expected results: The anatomical reconstruction technique of the posterolateral structure of the knee joint under arthroscopy may effectively restore the stability and motor function of the knee joint.

Expected conclusion: Arthroscopic anatomical reconstruction of the posterolateral structure of the knee is an effective minimally invasive technique.

Inclusion Criteria:

• Age <70 years old
• Those without avulsion of the affected biceps femoris tendon or iliac tibial bundle
• Those without avulsion fracture of the fibular stop of the lateral collateral ligament

Exclusion Criteria:

• none