title: Multicenter study of unicompartmental knee revision. PCA, Marmor, and St Georg compared in 3,777 cases of arthrosis.
abstract: The prospective Swedish Knee Arthroplasty Project contained 772 PCA, 1564 Marmor and 1441 St Georg unicompartment prostheses, implanted for gonarthrosis during the period December 1983-July 1990. Follow-up was performed in September 1991. There was a significant difference in the cumulative revision rate after only 2 years, increasing to 15 percent for the PCA, compared with 5-7 percent for the two other types. The difference between PCA and Marmor/St Georg was loosening of the femoral component. Major polyethylene wear was noted in a quarter of the revised PCA tibial components. The wear pattern of Marmor/St Georg was not analyzed in this study.
authors.affiliation: Department of Orthopedics, University Hospital, Lund, Sweden.
authors.forename: A
authors.initials: A
authors.lastname: Lindstrand
authors.forename: A
authors.initials: A
authors.lastname: Stenström
authors.forename: S
authors.initials: S
authors.lastname: Lewold
mesh_terms: D000206:Actuarial Analysis; D000368:Aged; D000369:Aged, 80 and over; D003343:Corrosion; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000601:surgery; D011095:Polyethylenes; D011474:Prosthesis Design; D011475:Prosthesis Failure; D012086:Reoperation
chemical_list: D011095:Polyethylenes