A Comparison of Methods to Assess the Excitability of Lower Motoneurones

Autor:	Ivan G. Milanov
Rok vydání:	1992
Předmět:	Soleus muscle medicine.medical_specialty business.industry General Medicine musculoskeletal system Spastic hemiparesis Ankle jerk reflex F wave Surgery Neurology Anesthesia Spastic Medicine Neurology (clinical) Spasticity medicine.symptom H-reflex business Tibial nerve
Zdroj:	Canadian Journal of Neurological Sciences / Journal Canadien des Sciences Neurologiques. 19:64-68
ISSN:	2057-0155 0317-1671
Popis:	The purpose of this investigation was to compare three methods of assessing the excitability of lower motoneurones—TA-reflex, H-reflex and F-wave—in 120 patients with spastic hemiparesis following a stroke. The H-reflex was recorded from the soleus muscle after submaximal electrostimulation of the tibial nerve. The T-Achilles (TA) reflex was recorded from the soleus muscle after percussion of the Achilles tendon. The F-wave was recorded in the distal limb muscles after supramaximal electrostimulation of the median, ulnar, fibular and tibial nerves. The patient’s healthy side was used as a control. The TA-reflex, H-reflex and F-wave showed increased amplitudes on the spastic side. All amplitude ratios: TA/M, H/M, Fmax/M and Fmean/M were increased. The H-reflex thresholds were decreased. The F-wave duration, persistence and number of phases were also increased on the spastic side. Despite clinically decreased muscle tone, there were no changes in TA or H-reflex parameters after treatment. On the other hand, F-wave parameters tended to normalize after treatment in all groups. In conclusion, the F-wave is a more sensitive method than the TA and H-reflexes in assessing the excitability of the lower motoneurone.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::445b6cf75ef97f8f0516170f55bfb89d https://doi.org/10.1017/s0317167100042554 Zobrazit plný text záznamu