• Yong-Qiang Zhang, Zhao Zhang, Meng Wu, Ya-Dong Zhou, Sheng-Lin Tao, Ya-Long Yang, Yang Li, Jun-Liang Liu, Peng Li, Yun-Sheng Teng, and Yong-Ming Guo.
• Department of Joint Surgery and Sports Medicine, Weapon Industry 521 Hospital, Xi'an, Shaanxi, China.
• Medicine (Baltimore). 2022 Jan 7; 101 (1): e28511.

IntroductionReconstruction of the medial patellofemoral ligament (MPFL) is an effective surgical method for the treatment of lateral patellar instability. At present, there is not much controversies regarding the femoral attachment, however, the controversies regarding patellar attachment versus attachment, number of graft strands, tension, isometry and so on. The following electronic databases will be searched: PubMed, the Cochrane Library, Embase, Web of Science, Medline. We will consider articles published between database initiation and March 2021. MPFL in the subject heading will be included in the study. Language is limited to English. Research selection, data extraction, and research quality assessment were independently completed by 2 researchers.ConclusionsMPFL reconstruction is a reliable technique for the treatment of patellofemoral instability. The Schöttle point is still the mainstream method for locating the femoral attachment, the patellar attachment for single-bundle is located at the junction of the proximal one third and the distal two third of the longitudinal axis of the patella. For double-bundles, one is located in the proximal one third of the medial patellar edge and another is in the center of the patellar edge. Meanwhile, the adjustment of graft tension during operation is very important.Copyright © 2022 the Author(s). Published by Wolters Kluwer Health, Inc.

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