title: In vivo 3D analysis of clavicular kinematics during scapular plane abduction: comparison of dominant and non-dominant shoulders.
abstract: The purpose of this study was to evaluate side-to-side differences in three-dimensional clavicle kinematics in normal shoulders during dynamic scapular plane elevation using model-image registration techniques. Twelve healthy males with a mean age of 32 years (range, 27-36 years old) were enrolled in this study. Clavicle rotations were computed with bilateral fluoroscopic images and CT-derived bone models using model-image registration techniques and compared between dominant and nondominant shoulders. There was no difference in retraction between both shoulders. The clavicle in dominant shoulders was less elevated during abduction than in nondominant shoulders (P=0.03). Backward rotation angles of dominant shoulders were significantly smaller than those of nondominant shoulders throughout the activity (P=0.03). Clavicular kinematics during scapular plane abduction were different according to hand-dominance.
authors.affiliation: Department of Mechanical and Aerospace Engineering, University of Florida, 330 MAE-A P.O. Box 116250, Gainesville, FL 32611-6250, USA; Department of Orthopaedic Surgery, Teikyo University Chiba Medical Center, Ichihara, Chiba, Japan. Electronic address: kmatsuki@med.teikyo-u.ac.jp.
authors.forename: Keisuke
authors.initials: K
authors.lastname: Matsuki
authors.forename: Kei O
authors.initials: KO
authors.lastname: Matsuki
authors.forename: Shang
authors.initials: S
authors.lastname: Mu
authors.forename: Tomonori
authors.initials: T
authors.lastname: Kenmoku
authors.forename: Satoshi
authors.initials: S
authors.lastname: Yamaguchi
authors.forename: Nobuyasu
authors.initials: N
authors.lastname: Ochiai
authors.forename: Takahisa
authors.initials: T
authors.lastname: Sasho
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Sugaya
authors.forename: Tomoaki
authors.initials: T
authors.lastname: Toyone
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Wada
authors.forename: Kazuhisa
authors.initials: K
authors.lastname: Takahashi
authors.forename: Scott A
authors.initials: SA
authors.lastname: Banks
mesh_terms: D000328:Adult; D001696:Biomechanical Phenomena; D002968:Clavicle / Q000000981:diagnostic imaging*; D005471:Fluoroscopy; D006801:Humans; D021621:Imaging, Three-Dimensional; D008297:Male; D016059:Range of Motion, Articular / Q000502:physiology*; D012399:Rotation; D012540:Scapula / Q000000981:diagnostic imaging*; D012782:Shoulder / Q000000981:diagnostic imaging / Q000502:physiology; D012785:Shoulder Joint / Q000000981:diagnostic imaging* / Q000502:physiology
keywords: 3D-2D registration techniques; Clavicle; Kinematics; Scapular plane abduction