The long head of the biceps tendon as a cause of shoulder pain has been a s
ource of debate since the 17th century. Bicipital tendinitis or bicipital t
enosynovitis is most often secondary to impingement beneath the coracoacrom
ial arch. The clinician can establish the diagnosis of disorders of the bic
eps tendon through a careful history, physical examination, and appropriate
imaging studies. A growing body of evidence supports the role of the bicep
s tendon as a stabilizer of the glenohumeral joint. New repair techniques a
re under development and preservation of the biceps-labral complex is now p
referred when possible.