title: In vivo three-dimensional wrist motion analysis using magnetic resonance imaging and volume-based registration.
abstract: This study represents a new attempt to non-invasively analyze three-dimensional motions of the wrist in vivo. A volume-based registration method using magnetic resonance imaging (MRI) was developed to avoid radiation exposure. The primary aim was to evaluate the accuracy of volume-based registration and compare it with surface-based registration. The secondary aim was to evaluate contributions of the scaphoid and lunate to global wrist motion during flexion-extension motion (FEM), radio-ulnar deviation (RUD) and radial-extension/ulnoflexion, "dart-throwing" motion (DTM) in the right wrists of 12 healthy volunteers. Volume-based registration displayed a mean rotation error of 1.29 degrees +/-1.03 degrees and a mean translation error of 0.21+/-0.25 mm and was significantly more accurate than surface-based registration in rotation. Different patterns of contribution of the scaphoid and lunate were identified for FEM, RUD, and DTM. The scaphoid contributes predominantly in the radiocarpal joint during FEM, in the midcarpal joint during RUD and almost equally between these joints during DTM. The lunate contributes almost equally in both joints during FEM and predominantly in the midcarpal joint during RUD and DTM.
authors: Division of Robotic Therapy, Osaka University Graduate School of Medicine, Japan. goto-akira@umin.ac.jp
authors: Akira
authors: A
authors: Goto
authors: Hisao
authors: H
authors: Moritomo
authors: Tsuyoshi
authors: T
authors: Murase
authors: Kunihiro
authors: K
authors: Oka
authors: Kazuomi
authors: K
authors: Sugamoto
authors: Takehiro
authors: T
authors: Arimura
authors: Jun
authors: J
authors: Masumoto
authors: Shinichi
authors: S
authors: Tamura
authors: Hideki
authors: H
authors: Yoshikawa
authors: Takahiro
authors: T
authors: Ochi
mesh_terms: D001696:Biomechanical Phenomena / Q000295:instrumentation* / Q000379:methods* / Q000592:standards; D002102:Cadaver; D002348:Carpal Bones / Q000033:anatomy & histology / Q000502:physiology; D006801:Humans; D021621:Imaging, Three-Dimensional; D008279:Magnetic Resonance Imaging / Q000379:methods* / Q000592:standards; D009068:Movement / Q000502:physiology; D015203:Reproducibility of Results; D014955:Wrist Joint / Q000033:anatomy & histology / Q000502:physiology*