title: Infant hip joint diagnostic support system based on clinical manifestations in X-ray images.
abstract: 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 alpha 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%.
authors.affiliation: Radiological Technology, Graduate School of Health Sciences, Okayama University, Okayama 700-8558, Japan. mhonda@hp.okayama-u.ac.jp
authors.forename: Mitsugi
authors.initials: M
authors.lastname: Honda
authors.forename: Seizaburo
authors.initials: S
authors.lastname: Arita
authors.forename: Shigeru
authors.initials: S
authors.lastname: Mitani
authors.forename: Yoshihiro
authors.initials: Y
authors.lastname: Takeda
authors.forename: Toshifumi
authors.initials: T
authors.lastname: Ozaki
authors.forename: Keiji
authors.initials: K
authors.lastname: Inamura
authors.forename: Susumu
authors.initials: S
authors.lastname: Kanazawa
mesh_terms: D005260:Female; D006618:Hip Dislocation, Congenital / Q000175:diagnosis* / Q000000981:diagnostic imaging* / Q000473:pathology; D006621:Hip Joint / Q000000981:diagnostic imaging* / Q000473:pathology; D006801:Humans; D007223:Infant; D011859:Radiography