JaLCDOI 10.18926/AMO/52896
FullText URL 68_5_277.pdf
Author Miyasaka, Dai| Ito, Tomoyuki| Imai, Norio| Suda, Ken| Minato, Izumi| Dohmae, Yoichiro| Endo, Naoto|
Abstract The acetabular coverage of the femoral head has been assessed in two-dimensions as the projected covered area or the covered angle on plain radiographs. We present a novel method of the three-dimensional assessment of femoral head coverage obtained by evaluating the covered volume of the femoral head in both normal and dysplastic hips. We also assessed the covered angles on the vertical slices passing through the center of the femoral head. The mean covered volume of the femoral head was 57.4% in normal hips and 26.6% in dysplastic hips. In dysplastic hips, the L-CE, A-CE, and P-CE angles were 7.7°, 21.8°, and 95.8°, respectively, while the acetabular angle was 27.5°. In normal hips, the CE angles were 34.0°, 56.8°, and 109.4°, respectively, while the acetabular angle was 7.2°. Our study suggests the usefulness of a novel 3D assessment for acetabular coverage of the femoral head. This assessment provided the precise 3D information necessary to diagnose hip dysplasia and assess the deficiency of acetabular coverage in these patients. Moreover, we may detect a cut-off between normal and dysplastic hips in the 3D assessment by assessing a large number of dysplastic hips both morphologically and using the new assessment.
Keywords hip dysplasia three-dimensional imaging femoral head coverage acetabulum patient positioning
Amo Type Original Article
Published Date 2014-10
Publication Title Acta Medica Okayama
Volume volume68
Issue issue5
Publisher Okayama University Medical School
Start Page 277
End Page 284
ISSN 0386-300X
NCID AA00508441
Content Type Journal Article
language 英語
Copyright Holders CopyrightⒸ 2014 by Okayama University Medical School
File Version publisher
Refereed True
PubMed ID 25338484
Web of Sience KeyUT 000343269300004