Journal of Bone and Mineral Metabolism

, Volume 27, Issue 5, pp 620–628

Prevalence of knee osteoarthritis, lumbar spondylosis, and osteoporosis in Japanese men and women: the research on osteoarthritis/osteoporosis against disability study

  • Noriko Yoshimura
  • Shigeyuki Muraki
  • Hiroyuki Oka
  • Akihiko Mabuchi
  • Yoshio En-Yo
  • Munehito Yoshida
  • Akihiko Saika
  • Hideyo Yoshida
  • Takao Suzuki
  • Seizo Yamamoto
  • Hideaki Ishibashi
  • Hiroshi Kawaguchi
  • Kozo Nakamura
  • Toru Akune
Original Article

DOI: 10.1007/s00774-009-0080-8

Cite this article as:
Yoshimura, N., Muraki, S., Oka, H. et al. J Bone Miner Metab (2009) 27: 620. doi:10.1007/s00774-009-0080-8

Abstract

Musculoskeletal diseases, especially osteoarthritis (OA) and osteoporosis (OP), impair activities of daily life (ADL) and quality of life (QOL) in the elderly. Although preventive strategies for these diseases are urgently required in an aging society, epidemiological data on these diseases are scant. To clarify the prevalence of knee osteoarthritis (KOA), lumbar spondylosis (LS), and osteoporosis (OP) in Japan, and estimate the number of people with these diseases, we started a large-scale population-based cohort study entitled research on osteoarthritis/osteoporosis against disability (ROAD) in 2005. This study involved the collection of clinical information from three cohorts composed of participants located in urban, mountainous, and coastal areas. KOA and LS were radiographically defined as a grade of ≥2 by the Kellgren–Lawrence scale; OP was defined by the criteria of the Japanese Society for Bone and Mineral Research. The 3,040 participants in total were divided into six groups based on their age: ≤39, 40–49, 50–59, 60–69, 70–79, and ≥80 years. The prevalence of KOA in the age groups ≤39, 40–49, 50–59, 60–69, 70–79, and ≥80 years 0, 9.1, 24.3, 35.2, 48.2, and 51.6%, respectively, in men, and the prevalence in women of the same age groups was 3.2, 11.4, 30.3, 57.1, 71.9, and 80.7%, respectively. With respect to the age groups, the prevalence of LS was 14.3, 45.5, 72.9, 74.6, 85.3, and 90.1% in men, and 9.7, 28.6, 41.7, 55.4, 75.1, and 78.2% in women, respectively. Data of the prevalence of OP at the lumbar spine and femoral neck were also obtained. The estimated number of patients with KOA, LS, and L2–L4 and femoral neck OP in Japan was approximately 25, 38, 6.4, and 11 million, respectively. In summary, we estimated the prevalence of OA and OP, and the number of people affected with these diseases in Japan. The ROAD study will elucidate epidemiological evidence concerning determinants of bone and joint disease.

Keywords

Epidemiology Prevalence Establishment of population-based cohort Osteoarthritis Osteoporosis 

Copyright information

© The Japanese Society for Bone and Mineral Research and Springer 2009

Authors and Affiliations

  • Noriko Yoshimura
    • 1
  • Shigeyuki Muraki
    • 2
  • Hiroyuki Oka
    • 1
  • Akihiko Mabuchi
    • 3
  • Yoshio En-Yo
    • 4
  • Munehito Yoshida
    • 4
  • Akihiko Saika
    • 5
  • Hideyo Yoshida
    • 6
  • Takao Suzuki
    • 6
  • Seizo Yamamoto
    • 6
  • Hideaki Ishibashi
    • 6
  • Hiroshi Kawaguchi
    • 7
  • Kozo Nakamura
    • 7
  • Toru Akune
    • 2
  1. 1.Department of Joint Disease Research, 22nd Century Medical and Research Center, Graduate School of MedicineThe University of TokyoTokyoJapan
  2. 2.Department of Clinical Motor System Medicine, 22nd Century Medical and Research Center, Graduate School of MedicineThe University of TokyoTokyoJapan
  3. 3.Department of Human Genetics, Graduate School of International HealthThe University of TokyoTokyoJapan
  4. 4.Department of Orthopaedic SurgeryWakayama Medical University School of MedicineWakayamaJapan
  5. 5.Saika ClinicWakayamaJapan
  6. 6.Tokyo Metropolitan Institute of GerontologyTokyoJapan
  7. 7.Department of Orthopaedic Surgery, Graduate School of MedicineThe University of TokyoTokyoJapan

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