Study of polysynaptic reflex excitability and somatosensory evoked potentials in patients with myofascial pain syndrome

2021 ◽  
pp. 31-40
Author(s):  
A. A. Safiullina ◽  
G. I. Safiullina ◽  
R. A. Yakupov
Keyword(s):  
Evoked Potentials ◽  
Somatosensory Evoked Potentials ◽  
Myofascial Pain ◽  
Active Form ◽  
Pain Syndrome ◽  
Myofascial Pain Syndrome ◽  
Latent Form ◽  
Reflex Excitability ◽  
Study Results ◽  
Polysynaptic Reflex

Introduction. Myofascial pain syndrome (MFPS) is one of the most common pathologies of the musculoskeletal system that causes chronic pain. This type of pain reaches its peak in middle-aged people; women get sick 2,5 times more often than men. The disease leads to significant disability; it is not only a medical but also a social problem. Atthe same time, a number of authors still note the low clinical efficacy of the applied therapy regimens. In this situation there is in demand the further study of the MFPS pathogenesis, in particular, the clinical and electroneurophysiological characteristics of this pathology, in order to search for new, including pathogenetically proved, treatment methods.The aim of the research was to study the relationship between the indicators of the blinking reflex and somatosensory evoked potentials in patients with active and latent forms of MFPS.Materials and methods. In order to study the neurophysiological aspects of MFPS, a comprehensive clinical and electroneurophysiological examination was carried out in 92 patients of working age, including 78 women and 14 men, whose average age was 48,1±9,3) years, suffering from MFPS of the scapular area. The patients were subdivided into subgroups depending on the prevalence and severity of pain manifestations: the first subgroup — with an active form (58 people, 63 %), the second subgroup — with a latent form of MFPS (34 people, 37 %). The control group was formed from conditionally healthy volunteers in the amount of 35 people, comparable to the main group by age and sex.Results. The comparing of the study results, taking into account polysynaptic reflex excitability and the data of somatosensory evoked potentials, revealed the significant positive correlations of the indicators. The obtained results allowed to assess the excitability of spinal cord motor neurons as well as suprasegmental structures in MFPS, involved in the implementation of pain syndrome.Conclusion. The use of clinical electroneurophysiology methods makes it possible to assess the functional state of the CNS structures involved in the analysis of nociceptive afferentation. In the active form of MFPS, an increase in the excitability of stem and thalamic structures was mainly determined, which could potentially indicate the activation of adaptive processes on the one hand, and on the other hand, the predisposition of neuronal networks to a state of arousal. In the latent form of MFPS, a multidirectional change in reflex excitability was observed.

scholarly journals The use of neurophysiological tests in integrated diagnostics of the myofascial pain syndrome in athletes

2019 ◽  
Vol 5 (1) ◽  
pp. 90
Author(s):  
Z.M. Ostapyiak ◽  
R.P. Gerich
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Myofascial Pain ◽  
Objective Assessment ◽  
Pain Syndrome ◽  
Myofascial Pain Syndrome ◽  
Blink Reflex ◽  
Reflex Excitability ◽  
The Central Nervous System ◽  
Polysynaptic Reflex

<em>The aim of the study</em>: to study of electroneurophysiological characteristics of myofascial pain syndrome in athletes. <em>Material and methods.</em> 40 sportsmen, representatives of the 4 sports at the age from 17 to 24 years and 25 healthy volunteers have participated in the study. The global electromyography and the study of the blink reflex have been included in the program of electroneurop hysiological studies in order to assess the polysynaptic reflex excitability of the brainstem. <em>Results</em>. If there is a myofascial trigger point in a muscle, the increased rest activity typе its pathogenic influence on the structures of the central nervous system, and this indicant can be used for objective assessment of the pathological process. The study of the blink reflex data allows to determine the connection of polysynaptic reflex excitability level with the myofascial pain severity in athletes. <em>Conclusions</em>: it has been determined that the global electromyography allows to objectively evaluate the pathogenesis of myofascial pain, and the blink reflex study can serve as an adequate neurophysiological test that reflects the performance peculiarities of the central nervous system suprasegmental parts to assess the blink reflex severity in athletes.

scholarly journals The therapeutic efficacy of action potential therapy in the treatment of myofascial pain syndrome

2001 ◽  
Author(s):  
◽  
Amarannathan Chettiar
Keyword(s):  
Action Potential ◽  
Rating Scale ◽  
Myofascial Pain ◽  
Short Form ◽  
Active Form ◽  
Pain Syndrome ◽  
Myofascial Pain Syndrome ◽  
T Test ◽  
Controlled Study ◽  
Mcgill Pain Questionnaire

The purpose of this investigation was to determine the relative efficacy of Action Potential Therapy (APT) as opposed to placebo Action Potential Therapy in the treatment of myofascial pain syndrome. The study was a prospective, randomized, placebo controlled study. The study consisted of two groups of thirty subjects each, which were selected from the Durban Metropolitan area. Only subjects diagnosed as having active trigger points in either the trapezius or gluteus medius muscle were accepted into the study. Each subject received four treatments over a period of seven to ten days. Group one received an active form of Action Potential Therapy while group two received placebo Action Potential Therapy. Subjective assessment was by means of the short form McGill pain Questionnaire and the N wnerical Pain Rating Scale-l Ol. Objective assessment was by means of an algometer and the Myofascial Diagnostic Scale. Readings were taken twice for each patient. The first assessment was conducted at the initial consultation prior to the first treatment, and the second assessment was completed during the last consultation after the treatment. Intra-group comparisons were made using the parametric two-sample paired t-test and the nonparametric Wilcoxon signed rank test. For the inter-group comparison, the parametric twosample unpaired t-test and non-parametric Mann-Whitney unpaired U test were used. Statistical analysis was completed at a 5% significance level.

scholarly journals Constipation in patients with myofascial pain syndrome as important aspect for clinical and nutritional treatment: A case-control study

2017 ◽  
Vol 30 (5) ◽  
pp. 567-581
Author(s):  
João Araújo BARROS-NETO ◽  
Tascya Morganna de Morais SANTOS ◽  
Matheus Lopes CORTES ◽  
Rosangela Passos de JESUS ◽  
Mariana Carvalho FREITAS ◽  
...  
Keyword(s):  
Pain Intensity ◽  
Case Control Study ◽  
Myofascial Pain ◽  
Pain Syndrome ◽  
Myofascial Pain Syndrome ◽  
Case Control ◽  
Horizontal Line ◽  
Study Results ◽  
Bowel Movements ◽  
Control Study

ABSTRACT Objective To identify the occurrence of constipation in patients with myofascial pain syndrome and to correlate these disorders with the clinical and nutritional variables. Methods This report describes a case-control study performed with 98 adults of both sexs, including 49 patients and 49 individuals without pain. The intensity of the reported pain was evaluated using the Pain Visual Analog Scale, which provided a simple and efficient measurement of pain intensity consisting of a 10cm horizontal line with the ends marked “absence of pain” and “worst possible pain”. The occurrence of constipation was evaluated using the Rome III criteria. A multivariate linear regression was proposed to investigate risk factors between the frequency of bowel movements per week and independent variables this study. Results The mean ages of the patients and controls were 45.9 (7.6) years and 41.2 (12.2) years, respectively. The intensity of the reported pain showed a mean of 7.3 (1.6) points. The likelihood of exhibiting constipation was 4.5 times higher in the patients than in the controls (p=0.001). The number of stools per week was negatively correlated with the intensity of the reported pain (r=-0.613, p<0.001). The use of benzodiazepines was negatively correlated with the frequency of bowel movements per week, while the use of muscle relaxants appeared to increase the frequency of defecation when combined with the use of benzodiazepines and adjusted for the intake of fiber, water and sexs (p=0.037). Conclusion Constipation was a frequent nosological entity in this patient population and the persistence of a change in intestinal motility showed a significant correlation with the pain intensity and low water intake. The reduction of the number of stools per week seems to be associated with the use of benzodiazepines.

Interventions for myofascial pain syndrome in cancer pain

2019 ◽  
Vol 13 (3) ◽  
pp. 262-269 ◽  
Author(s):  
Athmaja Thottungal ◽  
Pranab Kumar ◽  
Arun Bhaskar
Keyword(s):  
Cancer Pain ◽  
Myofascial Pain ◽  
Pain Syndrome ◽  
Myofascial Pain Syndrome

scholarly journals Temporomandibular Myofascial Pain Syndrome—Aetiology and Biopsychosocial Modulation. A Narrative Review

2021 ◽  
Vol 18 (15) ◽  
pp. 7807
Author(s):  
Paulina Golanska ◽  
Klara Saczuk ◽  
Monika Domarecka ◽  
Joanna Kuć ◽  
Monika Lukomska-Szymanska
Keyword(s):  
Myofascial Pain ◽  
Pain Syndrome ◽  
Myofascial Pain Syndrome ◽  
Considerable Part ◽  
Promising Alternative ◽  
Immune Systems ◽  
Complex Disorder ◽  
Craniosacral Therapy ◽  
Combined Action ◽  
Sympathetic Arousal

This review elaborates on the aetiology, diagnosis, and treatment of temporomandibular (TMD) myofascial pain syndrome (MPS) regulated by psychosocial factors. MPS impairs functioning in society due to the accompanying pain. Directed and self-directed biopsychosocial profile modulation may be beneficial in the treatment of MPS. Moreover, nutrition is also a considerable part of musculoskeletal system health. A fruit and vegetable diet contributes to a reduction in chronic pain intensity because of its anti-inflammatory influence. Cannabidiol (CBD) oils may also be used in the treatment as they reduce stress and anxiety. A promising alternative treatment may be craniosacral therapy which uses gentle fascia palpation techniques to decrease sympathetic arousal by regulating body rhythms and release fascial restrictions between the cranium and sacrum. MPS is affected by the combined action of the limbic, autonomic, endocrine, somatic, nociceptive, and immune systems. Therefore, the treatment of MPS should be deliberated holistically as it is a complex disorder.

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