title: Factors associated with poor outcomes following unicompartmental knee arthroplasty: redefining the "classic" indications for surgery.
abstract: Indications for UKA for isolated osteoarthritis of the knee remain controversial. Two hundred twenty-nine UKA that were performed at our institution were evaluated for which factors were associated with a poor outcome. BMI >35 was correlated with lower KSS scores than patients with BMI <35. In contrast to prior reports, patients younger than 60 years old had higher scores than patients 60 years and older at 2 years. Women had an unacceptably high short-term revision rate for any reason of 6.5%. Popularity for UKA has increased, and a more in depth investigation of predictors of poor outcomes demonstrates that younger patients appear to have better results. Obese patients continue to improve up to 2 years after surgery and should not be precluded from undergoing UKA.
authors.affiliation: Department of Orthopaedic Surgery, Center for Hip and Knee Replacement, New York-Presbyterian at Columbia University Medical Center, New York, New York.
authors.forename: Scott A J
authors.initials: SA
authors.lastname: Thompson
authors.forename: Barthelemy
authors.initials: B
authors.lastname: Liabaud
authors.forename: Kate W
authors.initials: KW
authors.lastname: Nellans
authors.forename: Jeffrey A
authors.initials: JA
authors.lastname: Geller
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000009:adverse effects* / Q000379:methods; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000601:surgery*; D012086:Reoperation; D017211:Treatment Failure
keywords: BMI; indications for surgery; patients' age; unicompartmental knee arthroplasty