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Acromioclavicular joint dislocation and concomitant labral lesions: a systematic review
Jad Mansour1, Joseph E Nassar2, Michel Estephan1
1Division of Orthopedic Surgery and Sports Medicine, McGill University Health Centre, Montreal, QC, Canada.
Clinics in Shoulder and Elbow
|February 2, 2024
Summary
Acromioclavicular (AC) joint dislocations often involve labral tears, particularly SLAP lesions. This review found a 27% prevalence of these associated injuries, highlighting their common occurrence in shoulder trauma.
Area of Science:
- Orthopedic Surgery
- Sports Medicine
- Shoulder Pathology
Background:
- Acromioclavicular (AC) joint dislocations frequently coexist with intra-articular glenohumeral pathologies.
- Limited research specifically addresses labral tears in AC joint trauma.
- This systematic review aims to fill this knowledge gap.
Purpose of the Study:
- To systematically review and synthesize existing literature on labral tears associated with AC joint dislocations.
- To determine the prevalence and types of labral lesions in patients with AC joint injuries.
Main Methods:
- A comprehensive systematic search of PubMed, Cochrane Library, and Google Scholar was performed.
- Studies published from 1976 to May 2023 were included.
- Seven studies (3 retrospective, 4 case series) involving 1,044 patients were analyzed.
Main Results:
- A pooled prevalence of 27% for intra-articular labral injuries was found in acute AC joint dislocations.
- Prevalence varied widely (13.9%–84.0%) depending on study and AC joint dislocation grade.
- Superior labrum anterior to posterior (SLAP) tears were the most common type, with prevalence ranging from 7.2% to 77.4%.
Conclusions:
- Labral lesions are frequently associated with AC joint dislocations, especially lower-grade injuries.
- SLAP lesions are the predominant type of labral tear in this context.
- Further research is needed to clarify risk factors like age and higher-grade dislocations.
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