title: Three-dimensional measurement of femoral neck anteversion and neck shaft angle.
abstract: We present a three-dimensional measurement technique for femoral neck anteversion and neck shaft angles which do not require alignment of the femoral and scanner axes. Two assessors performed the measurements on 11 patients (22 femurs). Repeatability between assessors was 2.7 degrees for femoral neck anteversion and 4.8 degrees for neck shaft angle. Measurements compared with an alternative single slice method were different by 2 degrees (3 degrees) in average. The method was repeatable and appropriate for clinical practice.
authors.affiliation: From the *Royal Children's Hospital; †Murdoch Childrens Research Institute; and ‡School of Engineering, and §Department of Paediatrics, University of Melbourne, Parkville, Victoria, Australia.
authors.forename: Morgan
authors.initials: M
authors.lastname: Sangeux
authors.forename: Jessica
authors.initials: J
authors.lastname: Pascoe
authors.forename: H Kerr
authors.initials: HK
authors.lastname: Graham
authors.forename: Fiona
authors.initials: F
authors.lastname: Ramanauskas
authors.forename: Tim
authors.initials: T
authors.lastname: Cain
mesh_terms: D000465:Algorithms; D060905:Coxa Vara / Q000000981:diagnostic imaging*; D005272:Femur Neck / Q000002:abnormalities* / Q000000981:diagnostic imaging*; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D011856:Radiographic Image Enhancement / Q000379:methods*; D011857:Radiographic Image Interpretation, Computer-Assisted / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D014057:Tomography, X-Ray Computed / Q000379:methods*