Tratamiento de la discontinuidad pélvica periprotésica

Abstract

Objective: Pelvic discontinuity is an important complication of THA and it compromises the inherent bony stability of the hemipelvis. A Trabecular Metal® acetabular revision system combined with a buttress augment or cup-cage construction may be an alternative to other treatment options. Materials and Methods: We retrospectively reviewed 10 patients with 11 pelvic discontinuity treated with revision THA using a Trabecular Metal® revision system. Mean follow-up was 30 months (range 16-51 months). Mean patient age was 69 years, and 8 patients were women. Results: In ten hips (91%) there was no radiological evidence of loosening at the last follow-up, we judged components as stable with a healed pelvic discontinuity. The mean HHS improved significantly from 39.8 points (17 to 60) to 75.6 points (45 to 91) after revision. Merle d´Aubigne-Postel modified score improved from 4.3 (3 to 5) before surgery to 8.6 points (7 to 10) after revision. Postoperative complications included one case with acute infection and one partial palsy of the peroneal nerve. Conclusion: Our early results indicate that Trabecular Metal® revision cup-cage construct may be a reliable alternative for the pelvic discontinuity treatment.