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Obturator Nerve Palsy due to Fixation of an Acetabular Reinforcement Ring with Transacetabular Screws. A Case Report*
RENATO M. FRICKER, M.D.†; HANS TROEGER, M.D.†; KARL M. PFEIFFER, M.D.†, BASEL, SWITZERLAND
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Investigation performed at the Division of Hand and Peripheral Nerve Surgery, Department of Surgery, University Clinic of Basel, Kantonsspital, Basel
J Bone Joint Surg Am, 1997 Mar 01;79(3):444-6
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Clinically evident disturbance of the obturator nerve following total hip replacement is rare, although one prospective study demonstrated subclinical electromyographic abnormalities in thirteen of thirty extremities9. Anatomical studies, however, have revealed that there is a risk of serious injury of the obturator nerve if fixation screws in the anterior or central region of the acetabulum perforate the medial wall of the acetabulum4,8. We report the case of a patient in whom a symptomatic lesion of the obturator nerve developed after fixation of an acetabular reinforcement ring with screws during a total hip arthroplasty.
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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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