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Patients with incomplete posteroinferior labral tears, without posterior shoulder instability have similar characteristics
Patients with incomplete posteroinferior labral tears showed similar retroversion and labral height when compared with patients without posterior shoulder instability, according to study results.
Researchers performed a retrospective, blinded analysis of 41 shoulders, with 21 shoulder comprising the Kim’s lesion group. Glenoid, chondrolabral retroversion, and anterior and posterior labral height were measured, and shoulders were classified as one of three types according to Kim’s classification.
The researchers found no differences in glenoid version, chondrolabral version, glenoid depth and labral height between the groups.
Magnetic resonance arthrogram had a substantial sensitivity, specificity and reliability for detecting Kim’s lesions, according to the researchers, with a sensitivity of 85.7%, a specificity of 75%, a positive predictive value of 78.3% and a negative predictive value of 83.3%.
Interobserver reliability for detecting Kim’s lesions had a K value of 0.739 for substantial reliability and 0.329 for fair reliability.
Disclosure: Provencher received support from the American Orthopaedic Society of Sports Medicine, the Orthopaedic Research and Education Foundation and the Arthroscopy Association of North America.