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首页> 外文期刊>BMC Neuroscience >Altered sensory-weighting mechanisms is observed in adolescents with idiopathic scoliosis
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Altered sensory-weighting mechanisms is observed in adolescents with idiopathic scoliosis

机译：患有特发性脊柱侧弯的青少年观察到感觉加权机制改变

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Background Scoliosis is the most common type of spinal deformity. In North American children, adolescent idiopathic scoliosis (AIS) makes up about 90% of all cases of scoliosis. While its prevalence is about 2% to 3% in children aged between 10 to 16 years, girls are more at risk than boys for severe progression with a ratio of 3.6 to 1. The aim of the present study was to test the hypothesis that idiopathic scoliosis interferes with the mechanisms responsible for sensory-reweighting during balance control. Methods Eight scoliosis patients (seven female and one male; mean age: 16.4 years) and nine healthy adolescents (average age 16.5 years) participated in the experiment. Visual and ankle proprioceptive information was perturbed (eyes closed and/or tendon vibration) suddenly and then returned to normal (eyes open and/or no tendon vibration). An AMTI force platform was used to compute centre of pressure root mean squared velocity and sway density curve. Results For the control condition (eyes open and no tendon vibration), adolescent idiopathic scoliosis patients had a greater centre of pressure root mean squared velocity (variability) than control participants. Reintegration of ankle proprioception, when vision was either available or removed, led to an increased centre of pressure velocity variability for the adolescent idiopathic scoliosis patients whereas the control participants reduced their centre of pressure velocity variability. Moreover, in the absence of vision, adolescent idiopathic scoliosis exhibited an increased centre of pressure velocity variability when ankle proprioception was returned to normal (i.e. tendon vibration stopped). The analysis of the sway density plot suggests that adolescent idiopathic scoliosis patients, during sensory reintegration, do not scale appropriately their balance control commands. Conclusion Altogether, the present results demonstrate that idiopathic scoliosis adolescents have difficulty in reweighting sensory inputs following a brief period of sensory deprivation.
机译：背景脊柱侧弯是脊柱畸形最常见的类型。在北美儿童中，青少年特发性脊柱侧弯（AIS）占所有脊柱侧弯病例的90％。虽然其患病率在10至16岁的儿童中约为2％至3％，但严重发展的女孩比男孩的风险更高，比率为3.6：1。本研究的目的是检验特发性的假说脊柱侧弯会干扰平衡控制过程中负责感官重定的机制。方法8例脊柱侧弯患者（7例女性和1例男性;平均年龄：16.4岁）和9例健康的青少年（平均年龄16.5岁）参加了实验。视觉和踝部本体感受信息突然受到干扰（眼睛闭合和/或肌腱振动），然后又恢复正常（眼睛睁开和/或无肌腱振动）。使用AMTI力平台来计算压力中心均方根速度和摇摆密度曲线。结果对于对照条件（睁眼且无腱振动），特发性脊柱侧弯青少年患者的压力中心均方根速度（变异性）中心大于对照参与者。脚踝本体感受的重新整合，当可获得或移除视力时，会导致青少年特发性脊柱侧凸患者的压力速度变化中心增加，而对照组参与者降低了压力速度变化中心。此外，在没有视力的情况下，当踝部本体感受恢复到正常状态（即肌腱振动停止）时，青少年特发性脊柱侧弯的压力速度变化中心增加。摇摆密度图的分析表明，青少年特发性脊柱侧弯患者在感觉统合期间不能适当地调整他们的平衡控制命令。结论总的来说，目前的结果表明，特发性脊柱侧弯青少年在短暂的感觉剥夺后难以重新分配感觉输入的重量。

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