Capsular origin of the long head of the biceps brachii tendon: a clinical case. 
The biceps brachii tendon arises directly from the superior glenoid labrum with the remainder usually attached to the supraglenoid tubercle.  Although some cases of anomalous origin of this tendon have been described, these anomalies are rarely encountered in daily practice.  We report a patient with a capsular origin of the LHBT as a congenital anomaly and present the clinical, magnetic resonance and arthroscopic findings.  Recognition of this anatomic variation may be important to explain the patient's clinical data and to aid both diagnosis and surgery.