Original Article

Osteoporosis International

, Volume 12, Issue 3, pp 239-243

First online:

The Incidence of Hip Fracture in Four Asian Countries: The Asian Osteoporosis Study (AOS)

  • E. M. C. LauAffiliated withDepartment of Community and Family Medicine, The Chinese University of Hong Kong, Hong Kong
  • , J. K. LeeAffiliated withOrthopaedic Clinic, Subang Jaya Specialist Centre, Malaysia
  • , P. SuriwongpaisalAffiliated withCommunity Medicine Centre, Faulty of Medicine, Ramathibodi Hospital, Thailand
  • , S. M. SawAffiliated withDepartment of Community, Occupational & Family Medicine, National University of Singapore, Singapore
  • , S. Das DeAffiliated withDepartment of Orthopedics, National University Hospital, Singapore
  • , A. KhirAffiliated withDepartment of Medicine, Penang Medical College, Malaysia;
  • , P. SambrookAffiliated withFlorance & Cope Department of Rheumatology, Royal North Shore Hospital, Australia

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The Asian Osteoporosis Study (AOS) is the first multicenter study to document and compare the incidence of hip fracture in four Asian countries. Hospital discharge data for the year 1997 were obtained for the Hong Kong SAR, Singapore, Malaysia and Thailand (Chiang Mai). The number of patients who were 50 years of age and older and who were discharged with a diagnosis of hip fracture (ICD9 820) was enumerated. The age-specific incidence rates were deduced and were directly adjusted to the US white population in 1989. The age-adjusted rates for men and women (per 100 000) are as follows: Hong Kong, 180 and 459; Singapore, 164 and 442; Malaysia, 88 and 218; Thailand, 114 and 289; compared with US White rates of 187 in men and 535 in women, published in 1989. We conclude that there is moderate variation in the incidence of hip fracture among Asian countries. The rates were highest in urbanized countries. With rapid economic development in Asia, hip fracture will prove to be a major public health challenge.

Key words:Asia – Hip fracture – Incidence – Standardized rates – Urbanization