BACKGROUND: @entity129 is a potentially devastating complication following @entity572 . The purpose of this study was to retrospectively identify risk factors for, and the prognosis associated with, a @entity129 following primary @entity572 . METHODS: Between 1970 and 2000, 27,004 primary total hip arthroplasties were performed at our institution. Forty-seven @entity1 (0.17%) with @entity86 were identified by a review of the complications log of a total joint database. The medical record of each @entity1 provided the data for this study. The average age of the @entity1 was fifty-seven years at the time of surgery. The @entity1 had serial clinical examinations for a minimum of two years, or until neurologic recovery or death. The @entity129 were classified as complete or incomplete, and only @entity1 with objective motor weakness were included in the study. The limb lengths were measured on preoperative and postoperative radiographs, and those data were then compared with the limb lengths in a matched cohort of @entity1 who had not sustained a @entity128 after a primary @entity572 . The extent of neurologic recovery, the need for braces or walking aids, and the use of medications for @entity158 were evaluated. RESULTS: There were twenty-nine complete @entity129 (sixteen peroneal, eleven sciatic, and two femoral) and eighteen incomplete @entity129 (fourteen peroneal, three sciatic, and one femoral). A preoperative diagnosis of @entity572 (p = 0.0004) or posttraumatic @entity625 (p = 0.01), the use of a posterior approach (p = 0.032), lengthening of the extremity (p < 0.01), and cementless femoral fixation (p = 0.03) were associated with a significantly increased odds ratio for the development of a postoperative @entity129 . Of the twenty-eight @entity1 with a complete palsy who were available for follow-up, only ten (36%) had complete recovery of motor strength, which took an average of 21.1 months. Seven of the eighteen @entity1 with an @entity912 fully recovered their preoperative strength. Twenty-one @entity1 required walking aids, and fifteen required permanent use of an ankle-foot orthosis. Five @entity1 required daily medication for chronic @entity158 . CONCLUSIONS: @entity129 is uncommon following primary @entity572 . A preoperative diagnosis of @entity572 or posttraumatic @entity625 , the use of a posterior approach, lengthening of the extremity, and use of an uncemented femoral implant increased the odds ratio of sustaining a @entity129 . The majority of the @entity2103 in our series, whether complete or incomplete, did not fully resolve.

XXXX following primary @entity572 .

@entity129 :: ('MESH:D003389', 'Disease') :: ['Motor nerve palsy', 'Nerve palsy', 'nerve palsies', 'motor nerve palsies', 'motor nerve palsy'] @entity1 :: ('9606', 'Species') :: ['patients', 'patient'] @entity625 :: ('MESH:D001168', 'Disease') :: ['arthritis'] @entity128 :: ('MESH:D020209', 'Disease') :: ['nerve injury'] @entity2103 :: ('MESH:D005155', 'Disease') :: ['motor nerve deficits'] @entity572 :: ('MESH:D006617', 'Disease') :: ['total hip arthroplasty', 'developmental dysplasia of the hip'] @entity86 :: ('MESH:D019106', 'Disease') :: ['postoperative motor nerve dysfunction'] @entity158 :: ('MESH:D010146', 'Disease') :: ['neurogenic pain'] @entity912 :: ('MESH:D010243', 'Disease') :: ['incomplete palsy']
@entity129 :: (MESH:D003389,Disease) :: ['Motor nerve palsy']
