Fracturas intraoperatorias asociado con cementado de protésis femoral. (Inglés)

Keith R. Berend, MD *,† * [MEDLINE LOOKUP] Adolph V. Lombardi Jr, MD, FACS *,† [MEDLINE LOOKUP] Thomas H. Mallory, MD, FACS *,† [MEDLINE LOOKUP] Douglas J. Chonko, MS, DO * [MEDLINE LOOKUP] Kathleen L. Dodds, BS, RN * [MEDLINE LOOKUP] Joanne B. Adams, BFA * [MEDLINE LOOKUP]

Abstract

Initial stability is critical for fixation and survival of cementless total hip arthroplasty. Occasionally, a split of the calcar occurs intraoperatively. A review of 1,320 primary total hip arthroplasties with 2-year follow-up, performed between August 1985 and February 2001 using the Mallory-Head Porous tapered femoral component, revealed 58 hips in 55 patients with an intraoperative calcar fracture managed with single or multiple cerclage wires or cables and immediate full weight bearing. At 7.5 years average follow-up (range, 2–16 years), there were no revisions of the femoral component, radiographic failures, or patients with severe thigh pain, for a stem survival rate of 100%. Average Harris hip score improvement was 33.8 points. Fracture of the proximal femur occurs in approximately 4% of primary THAs using the Mallory-Head Porous femoral component. When managed intraoperatively with cerclage wire or cable, the mid- to long-term results appear unaffected with 100% femoral component survival at up to 16 years.