Abstract

ROQUE BENITEZ, Rafael  and  CARLES HIRTENFELD, Michel. Acetabular protrusion in total hip arthroplasty. Rev Cubana Ortop Traumatol [online]. 2012, vol.26, n.2, pp. 110-118. ISSN 0864-215X.

Introduction: the presence of acetabular protrusion in a patient who will undergo total hip arthroplasty points to greater surgical difficulty, since treatment will require reconstruction of the cavitary defect. Objective: evaluate the results of treatment of acetabular protrusion with bone grafting of the medial acetabular wall combined with total hip arthroplasty with a cementless acetabular component. Methods: a prospective longitudinal descriptive study was conducted of 38 patients receiving bone grafts of the medial acetabular wall combined with total hip arthroplasty with a cementless acetabular component from January 2008 to December 2010. Autologous grafts were used in 23 patients and homologous bank bone grafts in 15. The patients were followed up through physical and radiographic examination conducted 4 weeks, 12 weeks, 6 months and 1 year after surgery. Results: all graft types seemed to incorporate within a period of approximately 3 months. No patient showed protrusion progression during the stage of graft consolidation or later. Harris hip score improved from a preoperative mean of 38 (22-55) to a postoperative mean of 89 (80-95). Conclusion: acetabular reconstruction with medial wall grafting and a cementless acetabular component provides sufficient bone substrate to extend the useful life of arthroplasty.

Keywords : total hip arthroplasty; acetabular protrusion; bone graft.

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