title: Gender and prevalence of knee osteoarthritis types in elderly Koreans.
abstract: We undertook to document sex differences in the prevalence of knee osteoarthritis (OA) at different disease stages in an elderly Korean population. Prevalence of 3 stages of knee OA (radiographic OA, severe radiographic OA, and candidacy for total knee arthroplasty [TKA]) was investigated in 696 elderly (≥65 years old) Korean subjects. Multivariate logistic regression was performed to evaluate associations between the risk factors of OA at these 3 disease stages. The overall prevalence of knee OA was 38.1% for radiographic OA, 26.4% for severe radiographic OA, and 6.5% for advanced OA warranting TKA. Women had much higher prevalence for all 3 stages. Female sex was found to be the strongest predictor for all 3 disease stages, but this was most remarkable for TKA candidates. This study documents that knee OA is highly prevalent among Korean elderly and that elderly Korean women are at much greater risk of requiring TKA.
authors.affiliation: Joint Reconstruction Center, Seoul National University Bundang Hospital, Seongnam, South Korea.
authors.forename: Hyung Joon
authors.initials: HJ
authors.lastname: Cho
authors.forename: Chong Bum
authors.initials: CB
authors.lastname: Chang
authors.forename: Ki Woong
authors.initials: KW
authors.lastname: Kim
authors.forename: Joon Hyuk
authors.initials: JH
authors.lastname: Park
authors.forename: Jae Ho
authors.initials: JH
authors.lastname: Yoo
authors.forename: In Jun
authors.initials: IJ
authors.lastname: Koh
authors.forename: Tae Kyun
authors.initials: TK
authors.lastname: Kim
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D007723:Korea / Q000453:epidemiology; D008297:Male; D009765:Obesity / Q000150:complications; D020370:Osteoarthritis, Knee / Q000150:complications / Q000000981:diagnostic imaging / Q000453:epidemiology* / Q000601:surgery; D015995:Prevalence; D011859:Radiography; D012307:Risk Factors; D012737:Sex Factors