title: A validation study for estimation of femoral anteversion using the posterior lesser trochanter line: an analysis of computed tomography measurement.
abstract: The aim of this study was to introduce a simple and reliable intraoperative reference guide to reproduce the normal femoral anteversion during total hip arthroplasty (THA). We hypothesized that the posterior lesser trochanter line (PLTL) could be a useful guide for estimating femoral anteversion during THA. We conducted a study of 56 men (112 hips) to evaluate the relationship between the PLTL and the femoral anteversion using computed tomography scans. The mean femoral anteversion was 9.0° ± 8.1° (range, -16.2° to 32.9°). The PLTL angle correlated (r(2) = 0.12, P < 0.05) with the femoral anteversion. We found a constant relationship between the PLTL and femoral anteversion, and the PLTL may be used as a guide for estimating the femoral stem anteversion during femoral stem fixation.
authors.affiliation: Department of Orthopaedic Surgery, Seoul Veterans Hospital, Seoul, South Korea.
authors.forename: Ho Hyun
authors.initials: HH
authors.lastname: Yun
authors.forename: Jung Ro
authors.initials: JR
authors.lastname: Yoon
authors.forename: Jae-Hyuk
authors.initials: JH
authors.lastname: Yang
authors.forename: Seung Yeop
authors.initials: SY
authors.lastname: Song
authors.forename: Sung Bum
authors.initials: SB
authors.lastname: Park
authors.forename: Jee Wun
authors.initials: JW
authors.lastname: Lee
mesh_terms: D000368:Aged; D060750:Bone Anteversion / Q000000981:diagnostic imaging*; D005269:Femur / Q000000981:diagnostic imaging*; D006801:Humans; D007432:Intraoperative Period; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012399:Rotation; D014057:Tomography, X-Ray Computed
keywords: femoral anteversion; femoral neck axis; hip; posterior lesser trochanter line; total hip arthroplasty