title: Early patellofemoral revision following total knee arthroplasty.
abstract: A consecutive series of 289 Miller-Galante (Zimmer, Warsaw, IN) total knee arthroplasties were studied, with particular reference to the patellofemoral joint. Sixteen knees were initially excluded; the remaining 273 arthroplasties were followed for 14 to 44 months. Thirty patients (11%) had patellofemoral pain. Twenty patients (7.3%) had revision patellofemoral surgery. Fourteen patients had revision surgery for patellar maltracking, of which 10 had resolution of their symptoms, 2 were improved, 1 had no change, and 1 developed a prosthetic infection. Six patients who had no evidence of patellar maltracking had revision surgery with a cemented metal-backed patellar component. Only two of these patients had symptom improvement from their revision surgery. A higher than usual incidence of patellar maltracking (5%) is reported. The first-generation Miller-Galante femoral component may contribute to the relative instability of patellofemoral tracking. Those patients with patellar maltracking were greatly improved by revision surgery; the results of revision surgery for anterior knee pain without associated patellar maltracking were disappointing.
authors.affiliation: Department of Orthopaedic Surgery, Queen Elizabeth Hospital, Adelaide, South Australia.
authors.forename: D G
authors.initials: DG
authors.lastname: Campbell
authors.forename: A D
authors.initials: AD
authors.lastname: Mintz
authors.forename: T M
authors.initials: TM
authors.lastname: Stevenson
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005269:Femur; D006801:Humans; D007719:Knee Joint / Q000601:surgery*; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D010329:Patella; D011183:Postoperative Complications; D012086:Reoperation; D012189:Retrospective Studies; D016896:Treatment Outcome