La reconstrucción de mecanismo extensor después de artroplastia total de rodilla

La reconstrucción del mecanismo extensor depués de la artroplastia total de rodilla con autoinjerto del tendón de aquiles.

Abstract:
Extensor mechanism rupture following total knee arthroplasty is a rare, albeit devastating, complication. Untreated, it leads to the patient's inability to ambulate without significant brace support or ambulatory aids. Unfortunately, historical treatments, such as primary suture or staple repair, tendon transfers, and autologous tendon transplants, have been moderately successful at best. Similar allograft extensor transplants have had varied results. We describe a technique utilizing a fresh frozen Achilles' tendon allograft to reconstruct a ruptured extensor mechanism after total knee arthroplasty. Preliminary results have been encouraging-better than historical treatments-in the short-term. Long-term follow-up will demonstrate how long a successful Achilles' tendon allograft reconstruction can be expected to remain functional.