Total hip arthroplasty with acetabular reconstruction using a bulk autograft for patients with developmental dysplasia of the hip results in high loosening rates at mid-term follow-up

PURPOSE: Managing a deficient acetabulum in patients with developmental dysplasia of the hip (DDH) can be challenging. The purpose of the study was to determine the mid-term results of total hip arthroplasty (THA) using a bulk structural autograft for reconstruction of the acetabular roof in patients with DDH. METHODS: Between 1982 and 1999, 112 patients underwent THA with acetabular roof-plasty using a bulk structural autograft for secondary osteoarthritis related to DDH. A total of 106 patients (115 hips) met inclusion criteria and were followed for an average of 11.6 years (seven to 24 years). The mean age was 52.5 years at the index operation. Clinical and radiological evaluations were performed according to the methods of Merle d'Aubigne and Postel, Johnston et al. and DeLee and Charnley. RESULTS: The overall Merle d'Aubigne hip score significantly improved (3.7 vs 10.4, p < 0.01). The limb length discrepancy decreased from 30 to 6 mm (p < 0.01). The average distance that the hip centre was distalised was 22.3 mm (0-56 mm). However, radiolucent lines were observed in 27 % of patients at final follow-up, and the overall rate of revision for aseptic loosening was 16 %. Further, Kaplan-Meier survivorship curves predicted a rapid increase in the failure rate at 15 years. CONCLUSIONS: The mid-term functional outcome of THA with an acetabular roof-plasty using a bulk autograft is satisfactory; however, the long-term results are questionable

Modified Pauwels’ Intertrochanteric Osteotomy in Neglected Femoral Neck Fracture

Many reported treatment methods for neglected femoral neck fractures do not always satisfactorily address nonunion, coxa vara, and limb shortening. We retrospectively reviewed the functional outcome of the modified Pauwels’ intertrochanteric osteotomy in 48 adults (mean age, 48.1 years) to determine whether this approach would correct those problems. The average preoperative limb shortening was 2.7 cm (range, 1.5–5 cm) in 38 patients and mean neck-shaft angle was 107.3° (range, 80°–120°). The minimum followup was 2 years (mean, 6.1 years; range, 2–16.5 years). Union was achieved in 44 of the 48 patients. Union also was achieved in two of the four nonunions after revision osteotomy. Postoperative avascular necrosis of the femoral head developed in two of the 48 patients after an average followup of 6 years. Limb-length equalization was achieved in 40 (83%) patients and 40 had near-normal gait. The average neck-shaft angle at the final followup was 132.7° (range, 120°–155°). The average Harris hip score was 86.7 points and Merle d’Aubigné-Postel score was 14.1. We believe the primary modified Pauwels’ intertrochanteric osteotomy is a reliable alternative to achieve fracture healing in neglected femoral neck fractures and simultaneously correct associated coxa vara and shortening. A two-stage surgical incision makes the procedure simple and less demanding