According to Dr. Hu Xu of the Department of Orthopedics, Xijing Hospital, proximal soft-tissue realignment is the main surgical intervention for recurrent patellar instability. In recent years, all-inside arthroscopic procedures or mini-open surgeries comes to replace traditional operations which have more associated morbidity and poor cosmetic results. In this article (ORTHOPEDICS July 2011;34(7):524), Xu and his colleagues report a very simple and all-inside arthroscopic technique for the operative treatment of recurrent patellar instability. Using two epidural needles in several steps and no accessory portals required, the medial patellar retinaculum is imbricated to the desired tension. The combination of lateral release and medial retinacular placation obviously improves the patellar tracking compared with pre-operation.

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