Guo Xia, Chau W W, Hui-Chan Christina W Y, Cheung Catherine S K, Tsang William W N, Cheng Jack C Y
Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hong Kong.
Spine (Phila Pa 1976). 2006 Jun 15;31(14):E437-40. doi: 10.1097/01.brs.0000222048.47010.bf.
A cross-sectional study of the balance control in adolescents with idiopathic scoliosis. OBJECTIVE.: To investigate the relationship among somatosensory function, balance control, and adolescent idiopathic scoliosis (AIS).
Balance control requires the contribution of somatosensory, visual, and vestibular inputs. Previous studies have shown that abnormal somatosensory evoked potentials (SSEPs) were associated with AIS.
A total of 105 girls with AIS and 57 normal girls aged 11-14 years entered the study, and were evaluated with bilateral tibial nerve evoked cerebral SSEPs and standing balance control under reduced or conflicting sensory conditions (i.e., the sensory organization test). One-way analysis of variance was conducted to evaluate the effects of scoliosis and somatosensory function tested by SSEPs on the performance of sensory organization test.
There were 15 patients with AIS who had abnormal SSEPs. Postural sway was measured on all subjects under normal, reduced, or conflicting somatosensory, visual, and vestibular conditions. One-way analysis of variance indicated no significant effect of spinal deformity or SSEPs on the balance control when there was an increased reliance on the somatosensory, visual, and vestibular systems during stance (P > 0.05). However, in the patients with abnormal SSEPs, a significant effect was found when subjects had to rely on somatosensory input for their balance control (P = 0.023). The effect of scoliosis by itself was not found to be significant (P = 1.0).
The finding of significantly larger difference in bilateral SSEP latencies in patients with AIS indicated the association of abnormal SSEPs with AIS. The finding of a significant effect of SSEPs on the balance control further indicated the presence of abnormal somatosensory function in a subgroup of patients with AIS.
一项关于特发性脊柱侧凸青少年平衡控制的横断面研究。
探讨体感功能、平衡控制与青少年特发性脊柱侧凸（AIS）之间的关系。
平衡控制需要体感、视觉和前庭输入的参与。先前的研究表明，体感诱发电位（SSEP）异常与AIS有关。
共有105名11 - 14岁的AIS女孩和57名正常女孩参与本研究，通过双侧胫神经诱发脑SSEP以及在感觉减少或冲突条件下（即感觉组织测试）进行站立平衡控制评估。采用单因素方差分析来评估脊柱侧凸和SSEP测试的体感功能对感觉组织测试表现的影响。
有15例AIS患者SSEP异常。在正常、感觉减少或冲突的体感、视觉和前庭条件下对所有受试者进行姿势摆动测量。单因素方差分析表明，当站立时对体感、视觉和前庭系统的依赖增加时，脊柱畸形或SSEP对平衡控制无显著影响（P > 0.05）。然而，在SSEP异常的患者中，当受试者必须依赖体感输入进行平衡控制时，发现有显著影响（P = 0.023）。未发现脊柱侧凸本身的影响具有显著性（P = 1.0）。
AIS患者双侧SSEP潜伏期差异显著，表明SSEP异常与AIS有关。SSEP对平衡控制有显著影响的发现进一步表明，AIS患者亚组中存在体感功能异常。
