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Revista de la Asociación Argentina de Ortopedia y Traumatología

On-line version ISSN 1852-7434

Abstract

MANA PASTRIAN, Diego; GARABANO, Germán  and  DEL SEL, Hernán. Reemplazo total de cadera en pacientes con displasia luxante. Rev. Asoc. Argent. Ortop. Traumatol. [online]. 2017, vol.82, n.3, pp.231-241. ISSN 1852-7434.

Introduction: We present the results in a series of patients treated with total hip replacement due to osteoarthritis secondary to hip dysplasia, and we describe the technical problems associated with total hip replacement in this group. Methods: Retrospective evaluation of 81 cases operated on due to hip dysplasia. Minimum follow-up: 2 years. Sixty-four women (80%) and 16 men. Age at surgery: <60 years (67.5%). According to Crowe classification, 24 cases were type 1 (30%), 36 type 2 (45%), 14 type 3 (17.5%) and 6 type 4 (7.5%). A radiographic measurement was performed to determine hip rotation center and length discrepancy in millimeters (pre- and postoperative), in order to evaluate the modification produced in these aspects by the surgery. Results: There were 10 complications related to the procedure: a case of deep infection, 6 cases of mechanical loosening, one case of femoral nerve injury, and two cases of early prosthetic dislocation. The implant survival rate was 91.25% at 10 years. The acetabular rotation center was restored to an anatomical position in 67 cases (up to 1 cm), and to a welltolerated position in 12 cases. Conclusions: Total hip replacement in hip dysplasia continues to be a challenge for the specialist. Structural bone grafting for the lateral defect, morcellized bone for protrusion and cemented cups if an uncemented option is not available, are still advisable.

Keywords : Hip dysplasia; Arthorplasty; Hip; Total replacement; Congenital dislocation.

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