[Analysis of the human wrist motion in three dimensions using a video-digitizer].
We report the results of a new assessment system (using a Video-digitizer and non-contact type transducer) in order to clarify the three-dimensional human wrist motion. The results of basic experimental studies conducted prior to this clinical assessment indicated that this new system was an extremely reliable and useful to measure three-dimensional motion. The results of the wrist motion in normal individuals showed supination at radial flexion movement, pronation in ulnar flexion movement, and pronation in the dorso-ulnar part of rotational movement. The comparative results of human wrist motion in pathological conditions suggested that an involvement of the distal radio-ulnar joint was primarily responsible for impairment in the rotational movement of the human wrist.
Nakamura
K
K
Department of Orthopedic Surgery, School of Medicine, Kitasato University, Kanagawa, Japan.
Futami
T
T
D000328:Adult; D000368:Aged; D000703:Analog-Digital Conversion; D005260:Female; D006801:Humans; D007592:Joint Diseases / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D016059:Range of Motion, Articular; D012680:Sensitivity and Specificity; D014741:Video Recording / Q000295:instrumentation*; D014955:Wrist Joint / Q000502:physiology* / Q000503:physiopathology