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The Journal of Bone and Joint Surgery, Vol 73, Issue 3 392-396, Copyright © 1991 by Journal of Bone and Joint Surgery, Inc


JOURNAL CONTENTS

Chronic posterior subluxation and dislocation of the radial head

SN Bell, BF Morrey and AJ Bianco
Department of Orthopedics, Mayo Clinic, Rochester, Minnesota 55905.

The clinical and radiographic features of chronic posterior subluxation or dislocation of the radial head were studied in thirty-four elbows of twenty-seven patients. Three characteristic radiographic types were noted: Type I, subluxation; Type II, posterior dislocation with minimum displacement; and Type III, posterior dislocation with substantial proximal migration of the radius. Follow-up of eighteen patients (twenty-one elbows) revealed that posterior displacement did not usually cause serious functional impairment except for loss of rotation of the forearm. The least common presentation, Type-I subluxation, caused pain and clicking and was associated with late degenerative arthritis. Cosmetic deformity due to prominence of the radial head was also a cosmetic problem, particularly with Type-III dislocation.
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