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Developmental dysplasia of the hip
3%
57/2052
Limb lengthening
1%
16/2052
Posttraumatic arthritis
27%
552/2052
Obesity
45%
926/2052
Posterior approach
24%
490/2052
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Certain pre-operative risk factors may place patients at increased risk for the development of nerve injury during primary total hip arthroplasty (THA). These include a history of developmental dysplasia of the hip (DDH), limb lengthening, posttraumatic arthritis, cementless femoral fixation, and the posterior approach. Farrell et al. reviewed more than 27,000 patients who underwent THA between 1970 and 2000. Forty-seven patients developed a nerve palsy (0.17%) with 29 complete palsies and 18 incomplete palsies. DDH, post-traumatic arthritis, posterior approach, use of a cementless femoral implant, and limb-lengthening were all found to have an increased risk of nerve palsy. Body-mass index (BMI) was not associated with increased risk of nerve palsy. Of note, the average time to maximal recovery for both incomplete and complete nerve palsies was approximately 2 years. Patient should be counseled regarding this complication especially if one of the above risk factors is present.
1.6
(59)
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