Sasaki Kentaro, Senda Masuo, Katayama Yoshimi, Ota Haruyuki, Matsuyama Yoshiyuki
Department of Physical Therapy, Kinjo University.
J Phys Ther Sci. 2013 Jun;25(6):675-8. doi: 10.1589/jpts.25.675. Epub 2013 Jul 23.
[Purpose] This study investigated the effect of neurological symptoms and/or signs after the occurrence of neurogenic intermittent claudication (NC) on postural sway during quiet standing of patients with lumbar spinal canal stenosis (LSS). [Subjects and Methods] Thirty-two female patients with LSS at the L4/5 level were studied. We measured the path of center of foot pressure (COP) during quiet standing with eyes open for 30 s using a stabilometer before and after the occurrence of NC. [Results] The total path length of COP (LC) and area surrounded by the outline of the path of COP (AC) significantly increased after NC. Body mass index (BMI) correlated with both the NC rate (after NC/before NC) of LC and that of AC. The average lateral COP displacement from the center of the base of support (COPRL) before NC was located on the asymptomatic side from the center of the base of support in 29 of 32 patients. After NC, COPRL moved to the symptomatic side in 31 patients. [Conclusion] These results suggest that patients with LSS are at risk of falling after NC, especially those with high BMI.
[目的] 本研究调查了腰椎管狭窄症（LSS）患者发生神经源性间歇性跛行（NC）后神经症状和/或体征对安静站立时姿势摇摆的影响。[对象与方法] 对32例L4/5节段LSS女性患者进行研究。在NC发生前后，使用稳定仪测量患者睁眼安静站立30秒期间的足底压力中心（COP）轨迹。[结果] NC发生后，COP的总路径长度（LC）和COP轨迹轮廓所包围的面积（AC）显著增加。体重指数（BMI）与LC和AC的NC发生率（NC发生后/NC发生前）均相关。NC发生前，32例患者中有29例的COP平均侧向位移（COPRL）从支撑面中心位于无症状侧。NC发生后，31例患者的COPRL移至有症状侧。[结论] 这些结果表明，LSS患者在NC发生后有跌倒风险，尤其是BMI较高的患者。
