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Radiology, Vol 190, 659-663, Copyright © 1994 by Radiological Society of North America
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FS Falchook, MB Zlatkin, GE Erbacher, JS Moulton, GS Bisset and BJ Murphy
Department of Radiology, University of Miami School of Medicine, Jackson Memorial Hospital, Fla.
PURPOSE: To assess the usefulness of magnetic resonance (MR) imaging in the diagnosis of distal biceps tendon ruptures. MATERIALS AND METHODS: MR images of the elbow in 20 patients with suspected distal biceps injury were retrospectively reviewed along with those of eight asymptomatic volunteers. Surgical confirmation was obtained in nine cases. RESULTS: MR imaging helped diagnose 10 complete ruptures with depiction of the absence of the tendon distally (n = 10), a fluid- filled tendon sheath (n = 9), an antecubital fossa mass (n = 3), muscle edema (n = 3), and atrophy (n = 2). Six partial tears were depicted with high signal intensity within the tendon (n = 6), fluid in the biceps tendon sheath (n = 6), and thinning (n = 3) or thickening (n = 3) of the distal tendon. Of the remaining patients, one each had tendinosis, tenosynovitis, a biceps hematoma, and a brachialis contusion. CONCLUSION: MR imaging helped confirm distal biceps tendon ruptures because it distinguished complete from partial ruptures and other entities that may mimic ruptures.
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