Journal of health sciences, Hiroshima University Volume 6 Issue 1
2006-12-28 発行

片側大腿切断者における足圧中心点を指標とした静止立位時の姿勢制御 : ソケットの形状による影響

Postural control in persons with unilateral trans-femoral amputation using center of pressure : effect of socket types
Kawano, Ichiro
Tobimatsu, Yoshiko
Maejima, Hiroshi
Moriyama, Hideki
Takemoto, Hidenori
Saka, Yukari
Otani, Takuya
Takasugi, Shin-ichiro
Iwamoto, Yukihide
The purpose of this study was to clarify the characteristics of postural control in persons with amputation and to examine the influence of two socket types. A group of six men with unilateral trans-femoral amputation (amputation group, AG) participated in this study. A group of twenty healthy men (control group, CG), matched for age, were also tested. The subjects performed two tests as follows: (1)quiet upright standing task (single-task, ST) and (2)upright standing and concurrent attention-demanding task (calculation task) (dual-task, DT). The center of pressure (CP) was measured using a force platform during the two conditions. In addition, the trajectory length (LNG), the rectilinear area (REA), and the lateral and fore-aft direction were calculated. Significant differences were observed between AG and CG concerning LNG and REA in ST (p<.05). But the effect of a cognitive task on the efficiency of postural control was not shown in either group. In contrast with CG, CP in AG showed a movement to the non-amputation side in the lateral direction (p<.05). Further, CP was moved to the non-amputation side as an effect of the cognitive task (p<.05). In regard to the effect by socket type, there was a tendency for LNG and REA in the quadrilateral socket to be smaller than in the ischial-ramal containment socket.
trans-femoral amputation
postural control