ORIGINAL ARTICLE
A biomechanical study of activities of daily living using neck and upper limbs with an optical three-dimensional motion analysis system
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Shunichi Henmi1,4, Kazuo Yonenobu1, Takashi Masatomi2 and Kunihiko Oda3
| (1) |
Department of Orthopaedic Surgery, National Hospital Organization Osaka Minami Medical Center, Kawachinagano, Japan |
| (2) |
Department of Orthopaedic Surgery, Osaka Kosei-Nenkin Hospital, Fukushima-ku, Osaka, Japan |
| (3) |
Osaka-Isen Instructional Department, Kita-ku, Osaka, Japan |
| (4) |
Present address: Department of Orthopaedic Surgery, Ikeda Municipal Hospital, 3-1-18 Johnan, Ikeda 563-8510, Japan |
Received: 01 March 2006 Accepted: 05 June 2006
Abstract In activities of daily living such as eating meals, the neck and upper limbs move in coordination. However, no methods have been established to analytically and quantitatively capture motion of the neck and limbs during these activities. We used a Vicon 512 system to simultaneously measure ranges of motion (ROMs) for the cervical spine, shoulders, elbows, and forearms. Correlations between the motion analyzer and the universal goniometer were >0.76. Repeatability of measurements using this analyzer were ?3° for all values. This system is thus highly accurate and can be useful for motion analysis of the neck and upper limbs. The sum of flexion angles for the cervical spine, shoulders and elbows were almost constant for each activity, at 261° for shampooing, 207° for washing the face, and 185° for eating a meal.
Key words Daily activity - Neck movement - Three-dimensional (3D) motion analysis - Upper limb movement - Vicon
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