Resumen

PEREIRA, Sebastián; BIDOLEGUI, Fernando; MALETTI, Pablo  y  VINDVER, Gabriel. Resultados a mediano plazo de la prótesis abisagrada rotatoria en el reemplazo total de rodilla primario y de revisión. Rev. Asoc. Argent. Ortop. Traumatol. [online]. 2020, vol.85, n.1, pp.49-55. ISSN 1852-7434.

Objective: To analyze the clinical and radiological mid-term outcomes of 34 rotating-hinge total knee arthroplasties. Materials and Methods: We studied 34 hinge knee prostheses. The arthroplasty indication was in the setting of primary surgery for 10 patients (29.5%) and in the setting of revision for 24 patients (70.5%). The overall average age was 78.5 years (range, 54-85 years). Results: The average follow-up was 6.5 months (range, 2-12). The achieved range of motion (ROM) was 110° of flexion (range, 70°-130°) and 5° of extension (range, 0°-20°). The average Knee Society Score (KSS) improved from 38 in the preoperative period to 82 in the postoperative period. Radiolucent lines (>2 mm) around the femoral or tibial components or around the stems were observed in 8 patients (23%). Five out of 34 patients (14.7%) developed complications. Three patients (8.9%) developed a deep infection. Two patients (5.9%) developed patellofemoral complications. Prosthesis survivorship without revision was 94% at 6.5 years. And, considering aseptic loosening as a revision cause, prosthesis survivorship was 100%. Conclusion: Modern rotatinghinge knee prostheses provide good outcomes in terms of function and pain relief. They also provide a low rate of aseptic loosening at mid-term follow-up. However, deep infection and septic loosening are common.

Palabras clave : Rotating hinge knee; Revision knee arthroplasty; Primary knee arthroplasty.

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