2001 Fiscal Year Final Research Report Summary
The usefulness of a newly desioned intelligent long leg brace
| Project/Area Number |
12671444
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Orthopaedic surgery
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| Research Institution | Kansai Medical University |
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Principal Investigator |
KAMEYAMA Osamu Kansai Medical Univ., Dept. of Orthop. Wurg., Assoc. Prof., 医学部, 助教授 (50148516)
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| Co-Investigator(Kenkyū-buntansha) |
TOKUHARA Yasuhiko Osaka International Women Univ. Faculty of Human Sciencds. Prof., 人間科学部, 教授 (40122139)
MATSUURA Masashi Hyogo Univ. of Teacher Education, Practical Life Studeis, Prof, 生活健康講座, 教授 (40036447)
NAKAO Hiroshi Kansai Medical Univ., Dept. of Orthop. Surg., Instructor, 医学部, 助手 (90309237)
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| Project Period (FY) |
2000 – 2001
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| Keywords | gait analysis / computer / slope / stairs / electromyograw / biomechanics / walking / long leg brace |
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| Research Abstract |
We developed the previous long leg brace, which had a computer-controlled joint for the knee so the user would be able to go up and down slopes and stairs. Using this new brace, we carried out gaint analysis in terms of dynamic electromyography under various conditions.
For normal subjects, no marked difference from the results of the previous model was observed in the pattern or level of muscle discharges while walking on flat ground. When walking up slopes with normal steps, discharges were observed in the leg musclesexcept for the gastrocnemius alteral head (Gl) before and after the heel-strike on the ground, probably due to absorption of the impact of landing. In going down slopes, the adtivities of the tibialis anterior (Ta) and Gl were smaller with controlled steps than with non-locked steps or locked steps. In walking up stairs by tandem gait, marked discharges of the Ta and biceps femoris were observed during the swing period under all walking conditions.
However, the large discharges of the Gl observed in the late grounding period with normal steps disappeared when the brace was applied. These results indicated that in controlled walking the muscle activity levels were reduced, and walking appeared to be made with less muscle strength.
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