This may involve avulsion of the subscapularis tendon insertion at the tuberosity, where the tendon and/or muscle part can project into the glenohumeral space (GHS), or an avulsion-fracture that additionally involves a more or less significant portion of the LTH, with the bony fragment becoming incarcerated in the GHS or completely posterior to the humeral head.
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Acute irreducible anterior shoulder dislocation due to interposition of the subscapularis muscle and the lesser tuberosity: a case report.
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