Artieda J, Quesada P, Obeso J A
Department of Neurology, University of Navarra, Pamplona, Spain.
Neurology. 1991 Feb;41(2 ( Pt 1)):286-9. doi: 10.1212/wnl.41.2_part_1.286.
We studied reciprocal inhibition of H-reflexes in the forearm flexor and extensor muscles in 14 patients with spastic hemiplegia secondary to a focal cerebral lesion and 14 normal volunteers. In the spastic limb, the Hmax/Mmax ratio was increased in both flexor and particularly extensor wrist muscles. The 3 normal inhibitory phases of reciprocal inhibition between extensor and flexor forearm muscles were markedly reduced on the spastic side of patients. The early disynaptic phase showed the greatest alteration. Reduced or absent inhibition between forearm muscles associated with increased spinal motoneuron excitability may be typical to spastic hemiplegia.
我们研究了14例继发于局灶性脑损伤的痉挛性偏瘫患者和14名正常志愿者前臂屈肌和伸肌中H反射的交互抑制情况。在痉挛侧肢体中，屈肌尤其是腕伸肌的Hmax/Mmax比值升高。患者痉挛侧前臂伸肌和屈肌之间交互抑制的3个正常抑制期明显缩短。早期双突触期变化最为显著。与脊髓运动神经元兴奋性增加相关的前臂肌肉间抑制减弱或消失可能是痉挛性偏瘫的典型表现。
