title: 14-year median follow-up using the press-fit condylar sigma design for total knee arthroplasty.
abstract: Median 14-year follow-up (mean 11.8 years) of a cemented primary posterior cruciate-retaining total knee arthroplasty (TKA) utilizing the Press-Fit Condylar (PFC) Sigma design was evaluated in 77 patients (79 TKA). Follow-up assessment included implant survivorship, x-rays, Knee Society rating system, and clinical evaluation. Radiographic analysis demonstrated minor non-progressive osteolysis in 40% (10/25) knees. Two revisions, one for instability at 4 years and one for polyethylene wear at 10 years were performed. Survivorship of the PFC Sigma knee implant was 97% using revision for any reason and 100% using aseptic loosening as endpoints. The PFC Sigma had excellent survivorship at 14 years, the longest clinical follow-up reported.
authors.affiliation: Shiley Center for Orthopaedic Research & Education at Scripps Clinic, La Jolla, California 92307, USA.
authors.forename: Shantanu S
authors.initials: SS
authors.lastname: Patil
authors.forename: George
authors.initials: G
authors.lastname: Branovacki
authors.forename: Mersadies R
authors.initials: MR
authors.lastname: Martin
authors.forename: Pamela A
authors.initials: PA
authors.lastname: Pulido
authors.forename: Yadin D
authors.initials: YD
authors.lastname: Levy
authors.forename: Clifford W
authors.initials: CW
authors.lastname: Colwell
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging / Q000601:surgery; D007720:Knee Prosthesis; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery*; D020959:Polyethylene; D011182:Postoperative Care; D011474:Prosthesis Design; D011859:Radiography; D013997:Time Factors; D016896:Treatment Outcome
chemical_list: D020959:Polyethylene
keywords: outcomes; press-fit condylar sigma implant; total knee arthroplasty