Cahan L D, Kundi M S, McPherson D, Starr A, Peacock W
Division of Neurosurgery, University of California, Irvine California College of Medicine.
Appl Neurophysiol. 1987;50(1-6):459-62. doi: 10.1159/000100766.
A group of 20 children with spastic cerebral palsy underwent selective dorsal rhizotomy for alleviation of spasticity. Pre- and postoperatively, cortical somatosensory evoked responses (cSSEP), H reflex and F wave studies were done. Clinically there was dramatic reduction of tone without noticeable sensory loss. The electrophysiologic studies showed several findings: (1) many children have abnormal cSSEP preoperatively; (2) surgery seldom leads to a loss of cSSEP; (3) in many patients, there is a noteworthy improvement in the cSSEP wave form; (4) some children have electrophysiologic evidence of spinal cord dysfunction preoperatively and (5) Hmax/Mmax ratio decreases after surgery confirming decrease in tone.
一组20名痉挛型脑瘫患儿接受了选择性脊神经后根切断术以缓解痉挛。术前和术后均进行了皮层体感诱发电位（cSSEP）、H反射和F波研究。临床上肌张力显著降低，且无明显感觉丧失。电生理研究显示了几个结果：（1）许多患儿术前cSSEP异常；（2）手术很少导致cSSEP丧失；（3）许多患者的cSSEP波形有显著改善；（4）一些患儿术前有脊髓功能障碍的电生理证据；（5）术后Hmax/Mmax比值降低，证实肌张力下降。
