title: Dislocation of the mobile bearing component of a patellofemoral arthroplasty: a report of two cases.
abstract: Isolated degenerative osteoarthritis of the patellofemoral joint can be treated with a patellofemoral arthroplasty. Improvements in patellar resurfacing designs have resulted in diminished complication rates. We describe two cases of dislocation of the polyethylene bearing, which is an unusual complication of a mobile bearing metal-backed patellar component of a patellofemoral arthroplasty.
authors.affiliation: Department of Orthopaedic Surgery, Rijnstate Hospital, Arnhem, The Netherlands.
authors.forename: Suzanne
authors.initials: S
authors.lastname: Witjes
authors.forename: Chris
authors.initials: C
authors.lastname: Van den Broek
authors.forename: Sander
authors.initials: S
authors.lastname: Koëter
authors.forename: Corné
authors.initials: C
authors.lastname: Van Loon
mesh_terms: D000328:Adult; D001178:Arthroplasty; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D005260:Female; D006801:Humans; D007720:Knee Prosthesis; D020370:Osteoarthritis, Knee / Q000601:surgery; D010329:Patella / Q000601:surgery; D020959:Polyethylene; D011474:Prosthesis Design; D011475:Prosthesis Failure
chemical_list: D020959:Polyethylene