Epidemiology of nontraumatic osteonecrosis of the femoral head in Japan.

@article{Ikeuchi2015EpidemiologyON,
  title={Epidemiology of nontraumatic osteonecrosis of the femoral head in Japan.},
  author={Kazuma Ikeuchi and Yukiharu Hasegawa and Taisuke Seki and Yasuhiko Takegami and Takafumi Amano and Naoki Ishiguro},
  journal={Modern rheumatology},
  year={2015},
  volume={25 2},
  pages={
          278-81
        }
}
OBJECTIVES To elucidate the epidemiology of nontraumatic osteonecrosis of the femoral head (ONFH), and to estimate the annual incidence rate in Japan. METHODS We examined, over the course of 3 years, personal records and radiographic images from the national registry of documents used for the study of nontraumatic ONFH in patients in Aichi Prefecture, Japan (population: 7.4 million). Those patients not meeting the diagnostic criteria according to the Japanese Investigation Committee for… CONTINUE READING

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