title: Difference between 2 measurement methods of version angles of the acetabular component.
abstract: We evaluated the relationship and the difference between measurements of version angles (VAs) of the acetabular components in total hip arthroplasty taken using 2 different methods. One VA was measured on an anteroposterior radiograph of the hip joint (VAP) and the other on a cross-table lateral radiograph (VCL) in 97 hips after surgery (clinical data) and 6 sawbone pelvic models (model data). There was a positive correlation between VAP and VCL for both data. Mean and standard deviation of the differences (VCL - VAP) between the 2 measurements were 5 degrees +/- 4.2 degrees in clinical data and -0.01 degrees +/- 0.32 degrees in model data. These differences on clinical data should be taken into consideration when comparing VAs in the literature using different measuring methods.
authors: Department of Orthopaedic Surgery, Teikyo University School of Medicine, Tokyo, Japan.
authors: Noriyuki
authors: N
authors: Arai
authors: Shigeru
authors: S
authors: Nakamura
authors: Takashi
authors: T
authors: Matsushita
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging* / Q000601:surgery; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip; D005260:Female; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D010384:Pelvic Bones / Q000000981:diagnostic imaging; D011474:Prosthesis Design; D011859:Radiography; D016059:Range of Motion, Articular; D018709:Statistics, Nonparametric