Femoral Morphology in the Dysplastic Hip: Three-dimensional Characterizations With CT.

Background: Hip dysplasia represents a spectrum of complex deformities on both sides of the joint. Although many studies have described the acetabular side of the deformity, to our knowledge, little is known about the three-dimensional (3-D) head and neck offset differences of the femora of dysplastic hips. A thorough knowledge of proximal femoral anatomy is important to prevent potential impingement and improve results after acetabular reorientation.

What is the prognosis of revision total hip arthroplasty in patients 55 years and younger?

Background: Revision THAs are expected to increase; however, few studies have characterized the prognosis of revision THAs in younger patients.

Questions/purposes: We performed a case-control study to evaluate intermediate-term survivorship, complications, and hip and activity scores after revision THAs in patients 55 years and younger, compared these outcomes with the results of primary THAs in a matched patient population, and evaluated risk factors for failed revisions.

Methods: Ninety-three patients (103 hips) had a minimum of 4 years after revision THA, died, or had rerevision surgery.