Resumo

QUINTEROS, Carlos M; BUTTARO, Martín A; COMBA, Fernando M  e  PICCALUGA, Francisco. Artroplastia de cadera con osteotomía de acortamiento femoral en la cadera displásica grado IV de Crowe. Rev. Asoc. Argent. Ortop. Traumatol. [online]. 2015, vol.80, n.3, pp.171-176. ISSN 1852-7434.

Introduction: The reconstruction of the anatomic center of rotation is one of the main purposes in Crowe type-IV developmental dysplasia of the hip. Subtrochanteric shortening osteotomy has emerged as an alternative to achieve this reconstruction. The aim of this paper is to analyze the clinical and radiological results, as well as the complications with this surgical technique. Methods: Ten cases were evaluated in 8 patients with Crowe type-IV developmental hip dysplasia who underwent subtrochanteric shortening osteotomy. All were female, 6 cases were unilateral and 2 bilateral. The average age was 42.2 years (range 36-55). Preoperative lower limb discrepancy was on average 41 mm. Posterolateral approach was used in all patients. Uncemented stems with modular metaphyseal fixation were implanted in 7 cases and polished cemented stems in 3 cases. Results: At an average follow-up of 38 months (range 12-63), all the cases showed radiological healed osteotomies. The postoperative center of rotation diminished an average of 42 mm (range 35-52 mm). Postoperative limb discrepancy was 6 mm (range 3-12 mm). Complications were: one aseptic femoral loosening, one subluxation due to excessive femoral anteversion, one dislocation, one acute infection and one acute femoral neuropraxia. Conclusions: In these patients with Crowe type-IV developmental dysplasia of the hip, subtrochanteric shortening osteotomy technique was associated with a high rate of consolidation, correction of the center of rotation, and limb lenght compensation.

Palavras-chave : Hip dysplasia; Subtrochanteric osteotomy; Crowe type-IV dysplasia; Total hip arthroplasty.

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