Isolated All-polyethylene Patellar Revisions for Metal-backed Patellar Failure

Abstract

The outcome of isolated patellar component revisions after metal-backed patellar failure is variable with satisfactory results reported from 78% to 100%. To supplement information in the literature we determined the failure rate and the functional outcome based on the Knee Society clinical and roentgenographic evaluation systems of isolated patellar component revisions after metal-backed patellar component failure. We retrospectively reviewed 27 patients with 28 isolated patellar component revisions for metal-backed patellar component failure performed between 1988 and 2005. Twenty-five knees in 24 patients were available for review with a minimum followup of 24 months (mean, 90 months; range, 24-210 months).

Late Onset Metallosis after Revision Total Knee Arthroplasty with Metal-Backed Patellar Component In Situ

“…Revision is challenging, but our other cases proved that it can be performed without excessive damage to the patellar bone. In line with our observations, Garcia et al [10] showed that isolated revisions for metalbacked patellar component failures come with satisfactory results.…”

Results of a Highly Porous Metal-Backed Cementless Patella Implant: A Minimum 5-Year Follow-Up

“…34 Newer implants also have thicker polyethylene, reduction in sharp metal borders, and a higher degree of conformity, which have led to improvement in outcomes and survivorship. 25,26,41 The metal-backed patella utilized in this study was formed using highly porous titanium. The porous metal, along with the use of direct compression molding technique, provides greater penetration of the polyethylene material into the porous metal.…”