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

2001 ◽  
Author(s):  
◽  
Amarannathan Chettiar

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.

2010 ◽  
Vol 38 (05) ◽  
pp. 849-859 ◽  
Author(s):  
Mei-Yuan Sun ◽  
Ching-Liang Hsieh ◽  
Yung-Yen Cheng ◽  
Hung-Chang Hung ◽  
Tsai-Chung Li ◽  
...  

Chronic neck myofascial pain syndrome (MPS) is a common disorder seen in clinics. There is no gold standard method to treat myofascial pain. We investigated the effects of acupuncture on patients with chronic neck MPS by a single-blind randomized controlled trial. A total of 35 patients were randomly allocated to an acupuncture group (AG) or a sham acupuncture group (SG). Each subject received acupuncture treatment twice per week for three consecutive weeks. The primary outcome measure was quality of life as assessed with Short Form-36, and secondary outcome measures were neck range of motion (ROM), motion-related pain, and Short-Form McGill Pain Questionnaire (SF-MPQ), as determined by a blinded investigator. The clinical assessments were made before treatment (BT) and after six acupuncture treatments (AT), as well as four weeks (F1) and 12 weeks (F2) after the end of the treatment. A total of 34 patients completed the trial. The results indicated that there is no significant difference in the ROM, motion-related pain, and SF-MPQ scores between AG and SG at AT, F1 and F2 (all p > 0.05). However, AG has greater improvement in physical functioning and role emotional of Short Form-36 quality of life at F2. The results indicate that acupuncture may be used to improve the quality of life in patients with chronic neck MPS.


2021 ◽  
Author(s):  
Hideaki Hasuo ◽  
Hideya Oomori ◽  
Kohei Yoshida ◽  
Mikihiko Fukunaga

Abstract Background: Expectations for treatment have a favorable effect on the subsequent course of pain and behavior in patients. It is not known whether receiving interfascial injection while patients view their ultrasound image with doctors (visual feedback) is associated with positive treatment expectations. Methods: This was a prospective, multicenter, observational clinical trial. We evaluated whether visual feedback during ultrasound-guided interfascial injection affects treatment expectations and the subsequent course of pain in patients with myofascial pain syndrome. Treatment expectations were set as mediators of pain using path analysis. The primary endpoint was the proportion of patients who showed improvement in pain numerical rating scale score by 50% or more 14 days after initiation of treatment. Results: During 2019 and 2020, 136 outpatients received ultrasound-guided interfascial injection for myofascial pain syndrome. Of these, 65 (47.8%) patients received visual feedback during ultrasound-guided interfascial injection. Compared with the non-visual feedback group, the visual feedback group had higher expectations for treatment, immediately after interfascial injection, and their expectations were maintained at day 14 of treatment (p < .001). In the visual feedback group, 67.7% of patients showed improvement in pain numerical rating scale score by 50% or more at day 14 (95% confidence interval: 56.5–78.9), whereas such improvement was observed in only 36.6% of the non-visual feedback group (95% confidence interval: 25.3–47.9; p < .001). Path analysis revealed that visual feedback had the largest influence on pain numerical rating scale reduction at 14 days, which was indirectly via higher expectations for treatment (β = 0.434).Conclusions: Visual feedback during ultrasound-guided interfascial injection had a positive effect on the subsequent course of pain in patients with myofascial pain syndrome by increasing patients’ treatment expectations.Trial registration: UMIN000043160. Registered 28 January 2021 (registered retrospectively).


2020 ◽  
Vol 8 (2) ◽  
pp. 41
Author(s):  
Boki Jaleha ◽  
I Putu Gede Adiatmika ◽  
Sugijanto Sugijanto ◽  
I Made Muliarta ◽  
Ketut Tirtayasa ◽  
...  

Pendahuluan: Myofascial pain syndrome otot upper trapezius merupakan gangguan muskuloskeletal pada otot upper trapezius akibat penggunaan otot secara berlebihan, postur yang jelek, dan repetitif mikrotrauma sehingga menyebabkan nyeri, taut band, kelemahan otot dan disabilitas pada daerah leher. Tujuan Penelitian: Untuk mengetahui perbedaan efek kedua intervensi, Mckenzie Neck Exercise dan Dynamic Neck Exercise dalam menurunkan disabilitas leher pada penjahit dengan myofascial pain syndrome otot upper trapezius. Metode: Penelitian eksperimental ini menggunakan rancangan randomized pre and post test two group design. Sampel penelitian sebanyak 18 orang yang dibagi secara acak menjadi 2 kelompok, masing-masing kelompok berjumlah 9 orang. Kelompok I diberikan McKenzie Neck Exercise sedangkan Kelompok II diberikan Dynamic Neck Exercise. Perlakuan dilakukan 3 kali seminggu selama 6 minggu dengan evaluasi menggunakan kuesioner penilaian Neck Disability Index (NDI). Hasil: Hasil uji statistik menggunakan paired-samples t test pada Kelompok I dengan rerata skor sebelum intervensi (23,8±2,1)% dan sesudah intervensi yaitu (16,4±2,4)% dengan nilai (p < 0,05) dan Kelompok II dengan rerata skor sebelum intervensi (23,6±2,2)% dan sesudah intervensi (20,9±2,3)% dengan nilai (p < 0,05). Uji beda hipotesis antara Kelompok I dengan Kelompok II menggunakan independent-samples t test diperoleh nilai (p < 0,05). Simpulan: McKenzie Neck Exercise lebih baik dalam menurunkan disabilitas leher daripada Dynamic Neck Exercise dengan myofascial pain syndrome otot upper trapezius. Saran: Penelitian selanjutnya diharapkan dapat mengontrol aktivitas pekerja dilingkungan kerja maupun tempat tinggal dan diperlukan adanya tindak lanjut ataupun pengawasan (follow up) sampel penelitian setelah berakhirnya program penelitian pada masing-masing sampel, untuk mengetahui hasil intervensi yang diberikan dapat memberikan efek jangka panjang.  


2018 ◽  
Vol 30 (3) ◽  
pp. 448-453 ◽  
Author(s):  
Semra Aktürk ◽  
Arzu Kaya ◽  
Derya Çetintaş ◽  
Gürkan Akgöl ◽  
Arif Gülkesen ◽  
...  

2020 ◽  
Vol 16 ◽  
pp. 174480692098407
Author(s):  
Feihong Jin ◽  
Lianying Zhao ◽  
Qiya Hu ◽  
Feng Qi

Background Myofascial pain syndrome (MPS) is an important clinical condition that is characterized by chronic muscle pain and a myofascial trigger point (MTrP) located in a taut band (TB). Previous studies showed that EphrinB1 was involved in the regulation of pathological pain via EphB1 signalling, but whether EphrinB1-EphB1 plays a role in MTrP is not clear. Methods The present study analysed the levels of p-EphB1/p-EphB2/p-EphB3 in biopsies of MTrPs in the trapezius muscle of 11 MPS patients and seven healthy controls using a protein microarray kit. EphrinB1-Fc was injected intramuscularly to detect EphrinB1s/EphB1s signalling in peripheral sensitization. We applied a blunt strike to the left gastrocnemius muscles (GM) and eccentric exercise for 8 weeks with 4 weeks of recovery to analyse the function of EphrinB1/EphB1 in the muscle pain model. Results P-EphB1, p-EphB2, and p-EphB3 expression was highly increased in human muscles with MTrPs compared to healthy muscle. EphB1 (r = 0.723, n = 11, P < 0.05), EphB2 (r = 0.610, n = 11, P < 0.05), and EphB3 levels (r = 0.670, n = 11, P < 0.05) in the MPS group were significantly correlated with the numerical rating scale (NRS) in the MTrPs. Intramuscular injection of EphrinB1-Fc produces hyperalgesia, which can be partially prevented by pre-treatment with EphB1-Fc. The p-EphB1 contents in MTrPs of MPS animals were significantly higher than that among control animals (P < 0.01). Intramuscular administration of the EphB1 inhibitor EphB1-Fr significantly suppressed mechanical hyperalgesia. Conclusions The present study showed that the increased expression of p-EphB1/p-EphB2/p-EphB3 was related to MTrPs in patients with MPS. This report is the first study to examine the function of EphrinB1-EphB1 signalling in primary muscle afferent neurons in MPS patients and a rat animal model. This pathway may be one of the most important and promising targets for MPS.


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