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Proximal Rupture of the Biceps Brachii with Slingshot Displacement into the Forearm. A Case Report*
CLAUDE T. MOORMAN III, M.D.†; STEPHEN G. SILVER, B.S.‡; HOLLIS G. POTTER, M.D.‡; RUSSELL F. WARREN, M.D.‡, NEW YORK, N.Y.
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Investigation performed at the Departments of Orthopaedic Surgery and Radiology, The Hospital for Special Surgery, New York City
J Bone Joint Surg Am, 1996 Nov 01;78(11):1749-52
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Extract

Disruption of the biceps brachii is unusual in persons who are less than fifty years old7,12,18,20-23,28. Rupture is generally secondary to either tendinopathy (distal) or tenosynovitis secondary to impingement (proximal), and it occurs almost exclusively in adults6,8,12,15,20. Proximal transection of the muscle belly has been described in military paratroopers10 and as a result of a direct blow14, although we are not aware of any reports identifying displacement of the distal portion of the musculotendinous unit. We present the case of a patient who had a traction injury to the proximal end of the biceps, which occurred with such force that the elastic recoil resulted in displacement of the musculotendinous unit around its intact distal insertion and into the forearm. To our knowledge, this is the first report of such an injury in any age-group.
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    These activities have been planned and implemented in accordance with the Essential Areas and policies of the Accreditation Council for Continuing Medical Education (ACCME) through the joint sponsorship of the American Academy of Orthopaedic Surgeons and The Journal of Bone and Joint Surgery, Inc. The American Academy of Orthopaedic Surgeons is accredited by the ACCME to provide continuing medical education for physicians.
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