title: An anatomic study of the impressions on the greater trochanter: bony geometry indicates the alignment of the short external rotator muscles.
abstract: In this study, 44 hip regions from 25 embalmed cadavers were dissected to identify the bony landmarks on the greater trochanter, which indicate the individual short external rotator muscle insertions. Micro-computed tomography (micro-CT) images were obtained to identify the bony impressions on the greater trochanter. Then, the soft tissues were removed and their insertions were identified to assess correlation with micro-CT images. Bony landmarks indicating the insertions and the running course of the piriformis muscle, the obturator internus muscle, and the obturator externus muscle were identified on the greater trochanter in all specimens. These findings could be helpful for preserving muscles during capsular release in the anterior approach because the alignment of the short external rotator muscles can be estimated preoperatively using CT images.
authors.affiliation: Unit of Clinical Anatomy, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University; Funabashi Orthopedic Hospital.
authors.forename: Tatsuya
authors.initials: T
authors.lastname: Tamaki
authors.affiliation: Unit of Clinical Anatomy, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University.
authors.forename: Akimoto
authors.initials: A
authors.lastname: Nimura
authors.affiliation: Funabashi Orthopedic Hospital.
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Oinuma
authors.affiliation: Funabashi Orthopedic Hospital.
authors.forename: Hideaki
authors.initials: H
authors.lastname: Shiratsuchi
authors.affiliation: Department of Orthopedic Surgery, Matsudo City Hospital.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Iida
authors.affiliation: Unit of Clinical Anatomy, Graduate School of Medical and Dental Science, Tokyo Medical and Dental University.
authors.forename: Keiichi
authors.initials: K
authors.lastname: Akita
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D059925:Anatomic Landmarks / Q000033:anatomy & histology*; D002102:Cadaver; D005260:Female; D005269:Femur / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D018482:Muscle, Skeletal / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D055114:X-Ray Microtomography
keywords: anatomy; anterior approach; greater trochanter; short external rotator muscles; total hip arthroplasty