Okamoto N, Murakami Y, Baba I, Kubo T
Int Orthop. 1980;4(3):193-203. doi: 10.1007/BF00268156.
A study was made of the H-reflex in the upper extremities to express objectively the degree of spastic paralysis in cases of cervical myelopathy. This reflex cannot normally be elicited in healthy persons. The H-reflex was elicited in 63 out of 80 patients with advanced symptoms of cervical myelopathy and was most frequently recorded from the median nerve. The H/M amplitude ratio is used to express the degree of spastic paralysis, the higher the ratio the more severe the dysfunction. The longer the clinical history the greater the tendency for the H-type of reflex to change to the HF-type and the higher the H/M amplitude ratio. The decrease rate of the pre- and post-operative H-reflex was high amongst soft disc cases whilst that in spondylosis and ossification of the posterior longitudinal ligament was low compared to the improvement in symptoms. It is concluded that the H-reflex in the upper extremities is a good method of expressing the degree of spastic paralysis in cervical myelopathy.
为客观反映颈椎病患者痉挛性瘫痪的程度，对上肢的Hoffmann反射（H反射）进行了研究。健康人通常引不出这种反射。80例有颈椎病晚期症状的患者中，63例引出了H反射，且最常从中枢神经记录到。H/M波幅比用于表示痉挛性瘫痪的程度，该比值越高，功能障碍越严重。临床病史越长，H型反射转变为HF型的倾向越大，H/M波幅比越高。与症状改善相比，软性椎间盘病例术前和术后H反射的下降率较高，而在脊柱关节病和后纵韧带骨化病例中则较低。结论是，上肢的H反射是反映颈椎病患者痉挛性瘫痪程度的一种好方法。
