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Musculoskeletal Imaging |
1 From the Departments of Radiology (G.B., W.B., M.S., R.B., E.G., W.J.), Traumatology (B.H.), and Plastic Surgery (C.H.), University Hospital of Innsbruck, Anichstrasse 35, 6020 Innsbruck, Austria. Received January 18, 2000; revision requested March 7; final revision received November 2; accepted November 9. Address correspondence to G.B. (e-mail: gerd.bodner@uibk.ac.at).
PURPOSE: To determine the feasibility of using ultrasonography (US) for evaluation of a radial nerve injury associated with humeral shaft fracture.
MATERIALS AND METHODS: In a prospective study, 11 consecutive patients with sensorimotor radial deficiency after distal humeral fracture were evaluated with conventional radiography, US, electroneurography, and electromyography. Surgical repair of the fracture and nerve inspection were performed in five patients. The remaining six patients were successfully treated conservatively. The US appearance of the radial nerve was studied in 10 healthy volunteers and in the noninjured arm of the 11 patients for comparison.
RESULTS: In five patients, US findings of a severely damaged radial nerve were confirmed at surgical nerve inspection. In one patient, the nerve was entrapped between fragments. One patient had a complete nerve dissection, one had a lacerated nerve from a loose compression plate, and one had a nerve riding on the edge of a bone fragment. In the fifth patient who underwent surgical inspection, the nerve was buried in the callus. In the six patients treated conservatively, US showed continuity of the nerve.
CONCLUSION: US may be useful for accurate evaluation of the radial nerve in patients with nerve palsy associated with humeral shaft fracture.
Index terms: Humerus, fractures, 416.411, 416.413 • Nerves, peripheral, 416.43 • Nervous system, US, 416.12989 • Ultrasound (US), utilization, 416.12989
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