Old patient with shoulder pain, MRI shows evidence of increased fluid in the glenohumeral joint. Altered signal intensity is noted in the long head of biceps along with fluid in the tendon sheath. Short head of biceps appears normal. These findings likely indicate partial tear of long head of biceps. Ruptures of the proximal biceps tendon make up 90-97% of all biceps ruptures and almost exclusively involve the long head. Age may vary considerably in patients with biceps rupture, but typically, the patient with a rupture caused by impingement or chronic inflammation is in the fourth, fifth, or sixth decade of life. Acute traumatic ruptures may occur in younger individuals or in anyone engaged in predisposing activities.
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