title: The survival of total knee arthroplasty in patients with osteonecrosis of the medial condyle.
abstract: The results of total knee arthroplasty in patients with osteonecrosis of the medial femoral condyle were examined using Kaplan-Meier survival analysis. The study included 32 osteonecrotic knees with an average final follow-up examination of 3.9 years. For comparison, 63 osteoarthrotic knees with an average final follow-up examination of 4.6 years were also analyzed. The survival rates were calculated using four distinct categories of failure: (1) revision, (2) revision or radiolucency, (3) revision, radiolucency, or pain, and (4) pain. On the basis of pain relief alone, the five-year postoperative success rate was 82% for osteonecrosis (eight knees) and 90% for osteoarthrosis (27 knees), with no significant statistical difference between the two groups.
authors.affiliation: Center for Hip and Knee Surgery, Mooresville, Indiana 46158.
authors.forename: M A
authors.initials: MA
authors.lastname: Ritter
authors.forename: L E
authors.initials: LE
authors.lastname: Eizember
authors.forename: E M
authors.initials: EM
authors.lastname: Keating
authors.forename: P M
authors.initials: PM
authors.lastname: Faris
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint / Q000000981:diagnostic imaging; D007720:Knee Prosthesis; D008297:Male; D010003:Osteoarthritis / Q000150:complications / Q000601:surgery; D010020:Osteonecrosis / Q000150:complications / Q000601:surgery*; D010146:Pain / Q000209:etiology / Q000601:surgery; D011475:Prosthesis Failure; D011859:Radiography; D012008:Recurrence; D016019:Survival Analysis