Infant hip joint diagnostic support system based on clinical manifestations in X-ray Images

Mitsugi Honda, Seizaburo Arita, Shigeru Mitani, Yoshihiro Takeda, Toshifumi Ozak, Keiji Inamura, Susumu Kanazawa

Research output: Contribution to journalArticle

3 Citations (Scopus)


Plain X-ray radiography is frequently used for the diagnosis of developmental dislocation of the hip (DDH). The aim of this study was to construct a diagnostic support system for DDH based on clinical findings obtained from the X-ray images of 154 female infants with confirmed diagnoses made by orthopedists. The data for these subjects were divided into 2 groups. The Min-Max method of nonlinear analysis was applied to the data from Group 1 to construct the diagnostic support system based on the measurement of 4 items in X-ray images: the outward displacement rate, upward displacement rate, OE angle, and a angle. This system was then applied to the data from Group 2, and the results were compared between the 2 groups to verify the reliability of the system. We obtained good results that matched the confirmed diagnoses of orthopedists with an accuracy of 85.9%.

Original languageEnglish
Pages (from-to)189-196
Number of pages8
JournalActa Medica Okayama
Issue number3
Publication statusPublished - Jul 2010



  • Acetabular dysplasia
  • Developmental dislocation of the hip
  • Infant hip joint diagnostic support system
  • Nonlinear multivariate analysis
  • X-ray image

ASJC Scopus subject areas

  • Medicine(all)
  • Biochemistry, Genetics and Molecular Biology(all)

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