title: Factors associated with functional limitations in the daily living activities of Japanese hip osteoarthritis patients.
abstract: OBJECTIVE
  As society ages, there is a vast number of elderly people with locomotive syndrome. In this study, the factors associated with functional limitations in daily living activities evaluated by female hip osteoarthritis (OA) patients were investigated.
  
  
  METHODS
  This study was a cross-sectional study. The subjects were 353 female patients who were newly diagnosed with hip OA at an orthopedic clinic with no history of hip joint surgery. Outcome indices were functional limitations in two daily living activities obtained from a questionnaire completed by the patients: (i) standing up (standing from a crouched position) and (ii) stair-climbing (climbing and/or descending stairs). The odds ratios (ORs) and 95% confidence intervals (CIs) were computed for explanatory variables using the proportional odds model in logistic regression to evaluate their associations with functional limitations.
  
  
  RESULTS
  Functional limitations in standing up were associated with heavy weight (third tertile vs. first tertile: 1.91, 1.11-3.27), participation in sports at school (0.62, 0.40-0.98), parity (vs. nullipara: 1.96, 1.08-3.56), old age and OA stage. Associations with functional limitations in stair-climbing were seen with short height (< 151.0 cm vs. ≥ 156.0 cm: 2.05, 1.02-4.12), bilateral involvement (vs. unilateral: 1.71, 1.01-2.88), old age and OA stage.
  
  
  CONCLUSIONS
  Old age, OA stage, heavy weight, parity, shorter height and bilateral OA were associated with functional limitations in standing up and/or stair-climbing, whereas participation in sports such as club activities in school maintained standing up.
authors.affiliation: Department of Public Health, Osaka City University Faculty of Medicine, Osaka, Japan.
authors.forename: Kyoko
authors.initials: K
authors.lastname: Kondo
authors.affiliation: Department of Orthopaedic Surgery, Kyushu Rosai Hospital of Japan Labor Health and Welfare Organization, Kitakyushu, Japan.
authors.forename: Seiya
authors.initials: S
authors.lastname: Jingushi
authors.affiliation: Department of Public Health, Osaka City University Faculty of Medicine, Osaka, Japan.
authors.forename: Satoko
authors.initials: S
authors.lastname: Ohfuji
authors.affiliation: Orthopaedic Division, Nakajo Central Hospital, Tainai, Japan.
authors.forename: Muroto
authors.initials: M
authors.lastname: Sofue
authors.affiliation: Department of Orthopedic Surgery, Kitasato University School of Medicine, Sagamihara, Japan.
authors.forename: Moritoshi
authors.initials: M
authors.lastname: Itoman
authors.affiliation: Department of Orthopaedic Surgery, Kanazawa Medical University, Kahokugun, Japan.
authors.forename: Tadami
authors.initials: T
authors.lastname: Matsumoto
authors.affiliation: Department of Orthopedics, Mitsuwadai General Hospital, Chiba, Japan.
authors.forename: Yoshiki
authors.initials: Y
authors.lastname: Hamada
authors.affiliation: Department of Orthopaedic Surgery, Nagasaki University Graduate School of Medicine, Nagasaki, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Shindo
authors.affiliation: Department of Orthopaedic Surgery, Japan Community Health Care Organization Yugawara Hospital, Ashigarashimogun, Japan.
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Takatori
authors.affiliation: Department of Orthopaedic Surgery, Fujita Health University School of Medicine, Toyoake, Japan.
authors.forename: Harumoto
authors.initials: H
authors.lastname: Yamada
authors.affiliation: Department of Orthopaedic Surgery, Hiroshima Prefectural Rehabilitation Center, Higashihiroshima, Japan.
authors.forename: Yuji
authors.initials: Y
authors.lastname: Yasunaga
authors.affiliation: Department of Orthopaedic Surgery, Asahikawa Medical University, Asahikawa, Japan.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Ito
authors.affiliation: Department of Bone and Joint Surgery, Seirei Hamamatsu General Hospital, Hamamatsu, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Mori
authors.affiliation: Department of Orthopaedic Surgery, Okinawa Red Cross Hospital, Naha, Japan.
authors.forename: Ichiro
authors.initials: I
authors.lastname: Owan
authors.affiliation: Tohoku Hip Joint Centre, Matsuda Hospital, Sendai, Japan.
authors.forename: Genji
authors.initials: G
authors.lastname: Fujii
authors.affiliation: Department of Orthopedic Surgery, Saiseikai Nakatsu Hospital, Osaka, Japan.
authors.forename: Hirotsugu
authors.initials: H
authors.lastname: Ohashi
authors.affiliation: Department of Public Health, Osaka City University Faculty of Medicine, Osaka, Japan.
authors.forename: Wakaba
authors.initials: W
authors.lastname: Fukushima
authors.affiliation: Department of Public Health, Osaka City University Faculty of Medicine, Osaka, Japan.
authors.forename: Akiko
authors.initials: A
authors.lastname: Maeda
authors.affiliation: Department of Public Health, Osaka City University Faculty of Medicine, Osaka, Japan.
authors.forename: Miki
authors.initials: M
authors.lastname: Inui
authors.affiliation: Department of Orthopaedic Surgery, Osaka City University Faculty of Medicine, Osaka, Japan.
authors.forename: Shinji
authors.initials: S
authors.lastname: Takahashi
authors.affiliation: Department of Public Health, Osaka City University Faculty of Medicine, Osaka, Japan.|College of Health Care Management, Miyama, Japan.
authors.forename: Yoshio
authors.initials: Y
authors.lastname: Hirota
mesh_terms: D000203:Activities of Daily Living; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D044466:Asian People; D001696:Biomechanical Phenomena; D001827:Body Height; D003430:Cross-Sectional Studies; D004185:Disability Evaluation; D005260:Female; D006621:Hip Joint / Q000503:physiopathology*; D006801:Humans; D007564:Japan / Q000453:epidemiology; D016015:Logistic Models; D008875:Middle Aged; D015999:Multivariate Analysis; D016017:Odds Ratio; D015207:Osteoarthritis, Hip / Q000175:diagnosis / Q000453:epidemiology / Q000503:physiopathology*; D050177:Overweight / Q000453:epidemiology; D010298:Parity; D012307:Risk Factors; D012720:Severity of Illness Index; D012737:Sex Factors; D011795:Surveys and Questionnaires; D055815:Young Adult
keywords: anthropometric factors; epidemiology; functional limitation; hip osteoarthritis; parity; sports