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The Journal of Bone and Joint Surgery 79:444-6 (1997)
© 1997 The Journal of Bone and Joint Surgery, Inc.

Obturator Nerve Palsy due to Fixation of an Acetabular Reinforcement Ring with Transacetabular Screws. A Case Report*

RENATO M. FRICKER, M.D.{dagger}, HANS TROEGER, M.D.{dagger} and KARL M. PFEIFFER, M.D.{dagger}, BASEL, SWITZERLAND

Investigation performed at the Division of Hand and Peripheral Nerve Surgery, Department of Surgery, University Clinic of Basel, Kantonsspital, Basel


   Introduction
 
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.


   Case Report
 
A sixty-three-year-old woman who had osteoarthrosis of the left hip joint was managed with total hip replacement with use of an acetabular reinforcement ring that was made of titanium. Postoperatively, mobilization of the patient was hampered by pain in the medial aspect of the thigh and weakness of the adductors of the hip; these symptoms . . . [Full Text of this Article]


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