title: Midterm results with the PFC Sigma total knee arthroplasty system.
abstract: We prospectively studied 207 consecutive patients (284 knees) undergoing total knee arthroplasty (June 1996 to December 1997) with a cemented tricompartmental Sigma PFC (DePuy Orthopaedics, Warsaw, Ind) total knee arthroplasty via a standard procedure (median follow-up, 87 months). Cruciate-retaining (272 knees, 96%) and cruciate-substituting (12, 4%) implants were used. There was one revision secondary to a ligament disruption after a fall. No implants were radiographically loose or at risk for loosening. Radiolucencies (none>2 mm or progressive) were shown on anteroposterior (7% of medial tibias) and lateral (17% of posterior femora) radiographs. Knee Society pain scores improved significantly (preoperative median, 20 points; postoperative median, 50 points [P<.001]). The PFC Sigma Knee system has excellent midterm durability.
authors.affiliation: Department of Orthopedic Surgery, St. Joseph's Medical Center, Baltimore, Maryland 21224-2780, USA.
authors.forename: David F
authors.initials: DF
authors.lastname: Dalury
authors.forename: Ricardo A
authors.initials: RA
authors.lastname: Gonzales
authors.forename: Mary Jo
authors.initials: MJ
authors.lastname: Adams
authors.forename: Thomas A
authors.initials: TA
authors.lastname: Gruen
authors.forename: Kathy
authors.initials: K
authors.lastname: Trier
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation*; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000601:surgery; D011446:Prospective Studies; D011474:Prosthesis Design; D011859:Radiography; D012086:Reoperation; D016896:Treatment Outcome