Dataset Information

Total hip arthroplasty for developmental hip dysplasia.

ABSTRACT: We reviewed 38 hip replacements in 33 female patients (mean age 55.3 years) with developmental hip dysplasia. One patient had died and the remaining 32 patients (36 hips) had a mean follow-up of 12.2 years (range 8-19 years). All hips were replaced using the Müller cemented implant, and in 32 hips bulk femoral head autograft was used. In 33 hips the socket was reconstructed at the level of the true acetabulum. Complications included one intra-operative femoral fracture and two early dislocations. Correction of leg length discrepancy was possible in 30 patients. The post-operative mean modified Merle d'Aubigne and Postel scores for pain, movement and walking were 5.9, 5, and 5.3 respectively. One cup was revised due to aseptic loosening at ten years. All grafts united, but minor graft resorption was noticed in 24 hips, moderate in 2 hips and major in 1 hip.

SUBMITTER: Papachristou G

PROVIDER: S-EPMC2254666 | biostudies-other | 2006 Feb

REPOSITORIES: biostudies-other

ACCESS DATA

Similar Datasets

Project description:BackgroundWhen reconstructing a hip with developmental dysplasia and high dislocation, sub-trochanteric shortening osteotomy is typically needed for placing the acetabular component in the appropriate anatomical position. However, the procedure can result in complications such as non-union of the osteotomy. We evaluated the contact area and the coincidence rate between the proximal and distal fragments at different femoral osteotomy levels and lengths. We then determined the optimal location of subtrochanteric femoral shortening transverse osteotomy in patients with unilateral Crowe type IV developmental dysplasia of the hip (DDH). The consistency between the proximal and distal segments was assessed as a possible predictive indicator of the union at the osteotomy site.MethodsWe retrospectively reviewed 57 patients with unilateral Crowe type IV?DDH who underwent X-ray imaging of both hip joints. We labelled the inner and outer diameters of the circular ring as N (mm) and M (mm), respectively. We defined the overlapped area between the proximal and distal ring as contact area S (mm2), and the ratio of contact area to distal ring area as coincidence rate R.ResultsN varied from 9.8-15.2?mm and M varied from 20.7-24?mm, both demonstrated a decreasing trend in the proximal to distal direction. At osteotomy lengths ranging from 0.5-2?cm, there were no differences in S between the different levels of osteotomy in each group. At osteotomy lengths ?2.5?cm, a significant higher coincidence rate was noted from 2?cm below the lesser trochanter to other positions below the level. At osteotomy lengths from 3 to 5.5?cm, a significantly higher coincidence rate was observed from the level of 1.5?cm below the lesser trochanter to other positions below the level.ConclusionsOur findings suggest that femoral shortening transverse osteotomy at the optimal subtrochanteric level can predictably increase the contact area and coincidence rate, which may contribute to the union at the osteotomy site. Considering the stability of the prostheses, it appears appropriate that osteotomy location should be shifted slightly distally.Trial registrationRetrospectively registered.

Dataset Information

Total hip arthroplasty for developmental hip dysplasia.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets