Isolated Revision of the Patellar Component in Total Knee Arthroplasty

The Impact of Patellar Resurfacing in Two-Stage Revision of the Infected Total Knee Arthroplasty

“…Problems affecting the patellofemoral joint have been identified as the most common cause of failure in primary TKA [11], and appropriate management of the patella during revision TKA has similarly been shown to strongly influence the clinical outcome [12,13]. Complications can include soft tissue impingement, avascular necrosis, patellofemoral instability, extensor mechanism ruptures, and patellar fracture [12].…”

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

“…This high rate of failure has subsequently led to the markedly decreased use of these components [12,16,31,36]. The need for revision after failure of the metal-backed patella has led some authors to attempt an isolated revision of the patellar component with variable success [2,8,9,11,20,21,24]. We asked whether the clinical outcome of isolated patellar component revisions for metal-backed patellar failure performed at our institution was comparable to recently published reports in the literature with regard to the subsequent failure rate, the Knee Society knee score and function score, the Knee Society roentgenographic evaluation, and continued knee symptoms.…”

“…The reported success, defined as not requiring a second revision procedure, after an isolated patellar component revision for metal-backed patellar failure is variable with a range of 78% to 100% [2,8,9,11,20,21,24]. Previous authors have cautioned that an isolated patellar revision can lead to an unsatisfactory result requiring a second revision procedure [2,8,9,24].…”

“…Previous authors have cautioned that an isolated patellar revision can lead to an unsatisfactory result requiring a second revision procedure [2,8,9,24]. Leopold et al reported a 20% reoperation rate in a series of 40 knees most commonly for patellar subluxation [24].…”

Patellar resurfacing as a second stage procedure for persistent anterior knee pain after primary total knee arthroplasty

“…Most of these studies involve patients with different implant designs and other presenting symptoms. Furthermore, long-term results that predict the outcome after isolated secondary resurfacing of the patellar component are lacking [4,16]. Therefore, the indication for patellar resurfacing in TKA needs to be defined.…”