title: Evaluation of the cartilaginous acetabulum by magnetic resonance imaging in developmental dysplasia of the hip.
abstract: MRI findings for 51 hips in 45 pediatric patients (mean age 2.3 years; range, 1.1-4.1 years) with suspected acetabular dysplasia or residual subluxations were analyzed retrospectively. We attempted to predict the growth of osseous acetabulum and future acetabular coverage on MRI performed at 2 years of age. The cut-off value of the cartilaginous angle was 18° for the cartilage acetabular index and 13° for the cartilage center edge angle. However, follow-up assessments to monitor the progress of changes in the congruity between femoral head and acetabular development are important.
authors.affiliation: aDepartment of Orthopaedic Surgery, Graduate School of Comprehensive Human Science bDepartment of Orthopaedic Surgery, Faculty of Medicine cFaculty of Health and Sport Science, University of Tsukuba, Ibaraki dDepartment of Orthopaedic Surgery, Kikkoman General Hospital, Chiba, Japan.
authors.forename: Ryoko
authors.initials: R
authors.lastname: Takeuchi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Kamada
authors.forename: Hajime
authors.initials: H
authors.lastname: Mishima
authors.forename: Naoki
authors.initials: N
authors.lastname: Mukai
authors.forename: Shumpei
authors.initials: S
authors.lastname: Miyakawa
authors.forename: Naoyuki
authors.initials: N
authors.lastname: Ochiai
mesh_terms: D000077:Acetabulum / Q000254:growth & development*; D002356:Cartilage / Q000254:growth & development; D002675:Child, Preschool; D005260:Female; D006617:Hip Dislocation / Q000150:complications* / Q000628:therapy; D006801:Humans; D007223:Infant; D008279:Magnetic Resonance Imaging; D008297:Male; D012189:Retrospective Studies