Panizza M, Balbi P, Russo G, Nilsson J
Laboratory of Clinical Neurophysiology, Fondazione Clinica del Lavoro, IRCCS, Castel Goffredo, Italy.
Am J Phys Med Rehabil. 1995 Sep-Oct;74(5):357-63.
The H-reflex recovery curve of the lower limb is considered a useful test for the diagnosis of spasticity, and recently the reciprocal inhibition of the H-reflex has proven to be abnormal in patients affected with spasticity. We studied the H-reflex recovery curve and the reciprocal inhibition of the H-reflex in the upper limb of a group of 33 patients with different degrees of spasticity secondary to stroke. Results were compared with those of 25 controls. The aim of this study was to investigate if the two tests showed any direct correlation with the degree of spasticity and, furthermore, with other clinical measures that are present in patients with spasticity as part of an upper motoneuron syndrome (i.e., changes in muscle tone, reflexes, force, etc.). The results showed an abnormality of both tests in most patients (decrease of the three phases of inhibition in the reciprocal inhibition test and increase of the late facilitation part of the H-reflex recovery curve), and these abnormalities seem mostly to be related to muscle tone, most important being the degree of correlation between tone and changes in abnormality of the H-reflex recovery curve (P < 0.03).
下肢的Hoffmann反射（H反射）恢复曲线被认为是诊断痉挛的一项有用测试，最近已证实，痉挛患者的H反射交互抑制存在异常。我们研究了33例因中风导致不同程度痉挛的患者上肢的H反射恢复曲线及H反射的交互抑制情况。将结果与25名对照组患者的结果进行比较。本研究的目的是调查这两项测试是否与痉挛程度存在直接关联，此外，是否与作为上运动神经元综合征一部分的痉挛患者所具有的其他临床指标（即肌张力、反射、力量等的变化）存在直接关联。结果显示，大多数患者的两项测试均存在异常（交互抑制测试中抑制的三个阶段降低，H反射恢复曲线的晚期易化部分增加），而且这些异常似乎大多与肌张力有关，最重要的是肌张力与H反射恢复曲线异常变化之间的相关程度（P < 0.03）。
