足継手の底背屈角度が大腿義足歩行におよぼす影響

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大腿義足のアライメントの調整は靴をはいた状態で行われるのが一般的である．このことは裸足の時に正しいアライメントでは歩くことができず，つま先立ちの状態で歩いたり，体幹を前屈させて歩いている．　われわれは，これらの義足歩行の不利を補うためのFJfootを関発した．　大腿義足の足継手をFJfoot，単軸足，SACHfootと取り替え，それぞれで靴ばき歩行，裸足歩行をさせ，歩行周期，足継手と膝継手の角度変化，体幹の動揺，床反力から比較検討した．足継手の可動域が体幹の上下動，膝の安定にも関与していたFJの底背屈可動域が靴ばき歩行，裸足歩行の両方を可能にしていた．All alignment of the conventional prosthesis practiced at hospitals and medical institute is almost adjusted to the condition which patients put their shoes on. However, we walk on bare foot in the houses. The amputees walk well out of the door, but they feel discomfort in his houses, because of the mal-align-ment of his prosthesis. Then, we have made a study and trial new foot (FJ foot) which abjust to both stituation, on wearing shoes and on bare foot. Five above knee amuptees were compared using the FJ foot, conventional foot and SACH foot which was applied in turn to the patient's prosthesis. The walking cycle was measured and computed using a foot switch, sellgrame, force plate. When using the conventional or the SACH foot there is considerable discrepancy between the ratios of each phase of walking depending upon whether the subject is bare foot or wearing shoes. In the bare foot state there is shortening of the foot flat and mid-stance phase and the duration of push-off is longer than when wearing shoes. However, when using the FJ foot, there is no marked change in the pattern obtained when wearing shoes or walking bare foot.
1989-03-31

足継手の底背屈角度が大腿義足歩行におよぼす影響

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