title: Anteversion of the acetabular component aligned with the transverse acetabular ligament in total hip arthroplasty.
abstract: In total hip arthroplasty (THA), accurately positioning the cup is crucial for achieving an adequate postoperative range of motion and stability. For 47 THA cases in which the inferomedial rim of the cup had been positioned parallel to the transverse acetabular ligament, we retrospectively performed the measurements of the radiographic cup anteversion angle relative to the anterior pelvic plane using 3-dimensional reconstruction computed tomography. The mean anteversion angle was 21.2°, with no significant difference detected in mean cup anteversion between the dysplastic hip group (15 hips) and the control group (15 hips). We suggest that the transverse acetabular ligament is a practical anatomical landmark for determining cup anteversion in THA for both dysplastic and nondysplastic hip cases.
authors.affiliation: Department of Orthopaedic Surgery, Oe-Kyodo Hospital, Tokushima, Japan.
authors.forename: Hideaki
authors.initials: H
authors.lastname: Miyoshi
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Mikami
authors.forename: Koichi
authors.initials: K
authors.lastname: Oba
authors.forename: Rui
authors.initials: R
authors.lastname: Amari
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging* / Q000601:surgery; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D060750:Bone Anteversion / Q000000981:diagnostic imaging* / Q000601:surgery; D016022:Case-Control Studies; D005260:Female; D005500:Follow-Up Studies; D006618:Hip Dislocation, Congenital / Q000000981:diagnostic imaging / Q000601:surgery; D006621:Hip Joint / Q000000981:diagnostic imaging* / Q000502:physiology / Q000601:surgery; D006801:Humans; D007593:Joint Instability / Q000000981:diagnostic imaging / Q000601:surgery; D008023:Ligaments, Articular / Q000000981:diagnostic imaging* / Q000601:surgery; D008297:Male; D008875:Middle Aged; D018579:Patient Selection; D011859:Radiography; D016059:Range of Motion, Articular / Q000502:physiology; D012189:Retrospective Studies; D016896:Treatment Outcome