title: Revision after total knee arthroplasty and unicompartmental knee arthroplasty in the Medicare population.
abstract: This study compares the relative risk of revision and associated risk factors after total or unicompartmental knee arthroplasty (TKA or UKA) in the Medicare population. A total of 61 767 TKA and 2848 UKA patients were identified. Reviewed data included type of treatment, gender, age, race, Charlson Index for comorbidity, length of stay, Medicare buy-in for socioeconomic status, region, and year. Unicompartmental knee arthroplasty patients were at increased risk for revision at 2 and 5 years. Those patients undergoing UKA were significantly more likely to require revision in the first 5 years as compared with those undergoing TKA. Risk factors contributing to TKA revision included younger male patients with higher comorbidities and lower socioeconomic status. About UKA, lower revision rates tend to favor those surgeons with higher volume.
authors.affiliation: VCU/MCV West Hospital, Department of Orthopaedic Surgery, Richmond, VA 23298, USA.
authors.forename: Brian
authors.initials: B
authors.lastname: Curtin
authors.forename: Arthur
authors.initials: A
authors.lastname: Malkani
authors.forename: Edmund
authors.initials: E
authors.lastname: Lau
authors.forename: Steven
authors.initials: S
authors.lastname: Kurtz
authors.forename: Kevin
authors.initials: K
authors.lastname: Ong
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D006278:Medicare; D012086:Reoperation; D012189:Retrospective Studies; D014481:United States