OCAD MSK

History

29 yr old male with recurrent posterior shoulder dislocation

Figure 1 for case lesser tuberosity of humerus ( RID1978 ) — Figure 1

Figure 2 for case lesser tuberosity of humerus ( RID1978 ) — Figure 2

Figure 3 for case lesser tuberosity of humerus ( RID1978 ) — Figure 3

Figure 4 for case lesser tuberosity of humerus ( RID1978 ) — Figure 4

Figure 5 for case lesser tuberosity of humerus ( RID1978 ) — Figure 5

Discussion

Isolated avulsion of the lesser tuberosity is a rare injury and suggests subscapularis avulsion. In this case, the avulsion is chronic: the mature ossicle is embedded in the retracted subscapularis tendon and there is severe muscle atrophy. BME in the anterior humeral head reflects acute injury 3 days prior to MRI. Note the posterior glenoid labral avulsion. Joint fluid courses through the anterior capsular/subscapularis defect. Reference article.

Diagnosis

lesser tuberosity of humerus ( RID1978 )

Hilary Umans, MD

Courtesy

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