Evaluation of risk correlation between recurrence of patellar dislocation and damage to the medial patellofemoral ligament in different sites caused by primary patellar dislocation by MRI: a meta-analysis

Journal of Orthopaedic Surgery and Research

Boyong Jiang¹  Yuting Shi²  Changxu Han³  Yuyan Na³  Yizhong Ren³  Chenggang Qiao⁴  Yong Zhu⁵ 

[1] Baotou Medical College, Inner Mongolia University of Science and Technology, Jiuyuan District, 014060, Baotou, Inner Mongolia Autonomous Region, China;Cardiac Function Department, Cadre Health Care Center, Inner Mongolia Autonomous Region People’s Hospital, Saihan District, 010020, Hohhot, Inner Mongolia Autonomous Region, China;Department of Arthroscopy and Sports Medicine, The Second Affiliated Hospital of Inner Mongolia Medical University, Huimin District, 010030, Hohhot, Inner Mongolia Autonomous Region, China;Department of Hand and Foot Surgery, The Second Affiliated Hospital of Inner Mongolia Medical University, Huimin District, 010030, Hohhot, Inner Mongolia Autonomous Region, China;Department of Spinal Surgery, The Second Affiliated Hospital of Inner Mongolia Medical University, Huimin District, 010030, Hohhot, Inner Mongolia Autonomous Region, China;

关键词: Patellar dislocation;    Medial patellofemoral ligament;    MRI;    Recurrence;   

DOI  :  10.1186/s13018-020-01984-0

来源: Springer

【 摘 要 】

PurposeNon-surgical treatment of primary patellar dislocation has a high risk of recurrent dislocation; thus, we tried to identify injuries in which sites of the medial patellofemoral ligament (MPFL) were most associated with recurrent dislocation by analyzing relevant original literature in order to provide improved suggestions on early surgical treatment.MethodsAccording to the preset retrieval strategy, the original studies were retrieved until January 2020 using MEDLINE, Embase and Cochrane Library. Review Manager 5.3 software was used to summarize and compare the differences of recurrent dislocation of MPFL injuries at different attachments.ResultsAlthough the incidence of recurrent patellar dislocation at the femoral attachment of MPFL was higher overall (femoral only vs. patellar only vs. combined: 37.6% vs. 32.3% vs. 35.8%), no statistical difference was found among the three groups (femoral only vs. patellar only, RR = 1.32 [95% CI 0.89–1.95]; P = 0.17) (femoral only vs. combined, RR = 1.15 [95% CI 0.59–2.22]; P = 0.68) (patellar only vs. combined, RR = 0.94 [95% CI 0.69–1.29]; P = 0.72). In addition, the sulcus angle of recurrent dislocation group is significantly greater than that in the non-recurrent dislocation group (MD = 3.06 [95% CI 0.42–5.70]; P = 0.02).ConclusionsBased on the pooled data collected from the original studies available, the risk of recurrent patellar dislocation due to damage to the MPFL at different sites did not differ. Additionally, the sulcus angle in the group with recurrent dislocation was considerably higher when comparing with the group without recurrent dislocation, that is, the shallower and flatter of the trochlear groove, the higher the risk of recurrent patellar dislocation.

【 授权许可】

CC BY