جستجوی مقالات مرتبط با کلیدواژه "myofascial pain" در نشریات گروه "پزشکی"

Myofascial pain dysfunction syndrome (MPDS) can be a consequence of conditions such as temporomandibular disorders. The aim of this study was to compare the effect of diode laser and ibuprofen to reduce pain and inflammation in patients with MPDS.

In this study, 40 patients with MPDS were randomly divided into two groups. One group received ibuprofen 500 mg two times a day for 3 weeks and had placebo laser sessions. The other group received active laser (diode 810 nm CW) as treatment factor and placebo drug. Pain intensity was measured by visual analog scale and maximum painless mouth opening was also measured as a functional index every session and in a 2-month follow-up. Data were collected and analyzed using independent ttest and analysis of variance (a=0.05).

Low-level laser group showed a significant reduction in pain and a significant increase in mouth opening. In ibuprofen group, neither pain intensity nor maximum mouth opening had significant improvement.

Treatment with low-level laser improved mouth opening and pain intensity significantly in patients with MPDS. Therefore, low-level laser can be a good treatment modality for these patients.

Myofascial pain syndrome is a chronic syndrome that occurred in a local or focal part of the body. The basis for myofascial pain syndrome is the presence of myofascial trigger point or points, producing pain in clinical examinations.

This study aimed to compare the effect of injection of bicarbonate, hyaluronidase, and lidocaine on myofascial pain syndrome.

The patients were randomly allocated to three groups of bicarbonate, hyaluronidase, and lidocaine. The injection was done at two painful regions of trapezius muscle with a sonography guide for each patient. The values of visual analogue scale (VAS), pre-injection range of motion (ROM), immediately after injection, second and fourth week were measured.

The analysis showed that there were no significant differences between the three groups for age, gender, BMI, and height (P > 0.05). Repeated measures one-way ANOVA (week * group) 4 * 3 was used to compare the effect of bicarbonate, hyaluronidase, and lidocaine on VAS and range of motion (ROM) before injection, immediately after injection, second and fourth week. The results showed that the main effect of group and week is significant for VAS (P < 0.05). This study showed that the values of VAS were significantly different between the three groups during the fourth weeks of the study. Moreover, the patients experienced more pain decline in the hyaluronidase group during weeks before injection, after injection, second and fourth week, which indicated the permanent effect of this medication on pain decline.

Injection of lidocaine leads to a significant reduction in pain immediately after injection; however, the decline was not permanent and disappeared in the following four weeks. But VAS reduction in hyaluronidase group more than bicarbonate and lidocaine groups.

This study assessed the effect of polarized low-level laser therapy (PLLLT) in the treatment of myofascial trigger points (MTrPs) in the trapezius muscles. Its effectiveness in pain reduction was compared to low-level laser therapy (LLLT).

64 patients with MTrPs were randomly divided into two groups, namely, PLLLT and LLLT. Each patient received treatment for a period of 2 weeks, 5 sessions a week. The intensity of laser irradiation to the skin surface was 6 J/cm2. The system exit power was 160 mw at 755 nm wavelength. The Visual Analog Scale (VAS) for the 1st, 5th and 10th sessions was analyzed through two-way repeated measures ANOVA.

Increasing the number of treatment sessions was effective in reducing pain intensity (P> 0.05). The effect of LLLT in pain reduction was significantly greater than that of PLLLT (P>0.05). Referred pain (RP), limitation of neck movement (LNM), presence of muscular taut band (PMTB) and sensitivity of muscular taut band (SMTB) were reduced significantly by the end of the 10th session, compared with participants’ condition at the beginning of the 1st session in both groups.

PLLLT and LLLT can effectively treat MTrPs of the trapezius muscles, especially to reduce RP, LNM, PMTB and SMTB. However, the effect in the LLLT group was significantly greater than in the PLLLT group. In accordance with the observed results, LLLT is recommended as an effective method for treating MTrPs.

This study was aimed to investigate the clinical presentations and frequencies of co-morbid factors in patients with myofascial pain or myalgia of masticatory muscles. In this retrospective study, the data were obtained from the documents of the patients with myalgia or myofascial pain of the masticatory muscleswho were conceded toKerman Orofacial Pain Clinic, Kerman, Iran. Their clinical presentations and frequencies of possible related comorbid factors were evaluated. The chi-square test, Fisher’s exact test, and t-test were used for comparing the distribution of variables. Analysis of variance (ANOVA) and Tukey's honestly significant difference (HSD) test were also used for comparisons between groups. A P-value ≤ 0.05 was considered statistically significant. Patients with masticatory muscle myalgia or myofascial painconsisted of 296 individuals, 258 women (87.7%) and 38 men (12.3%) with an average age of 34.00 ± 11.75 years (range: 15-75 years). Temporomandibular disorder (TMD) occurred in 259 (87.5%) patients and 262 (88.5%) subjects had headache. A total of 178 individuals (60.1%) reported pain in three parts of the body and 155 subjects (52.4%) had insomnia. Bruxism, other oral para-functional habits, and poor head and neck postures were found in 156 (52.7%), 167 (56.4%), and 80 (27.0%) subjects, respectively. The frequency of moderate to severe depression and moderate anxiety was 22.0% of our study population. This study stated that the frequency of masticatory muscle pain (MMP) was high in patients with TMD, headache, and psychological disorders and accompanied with insomnia, oral parafunction, and bodily pain.

Statement of the Problem: The masseter is generally involved in myofascial pain, myositis, oral submucous fibrosis (OSMF), bruxism, and in subjects with habitual tobacco/arecanut chewing. In all the above conditions, changes in the internal echogenic pattern on ultrasonography of the muscle may be observed.
The present study aimed at evaluating the internal echogenic pattern of masseter by ultrasonography in subjects with various conditions affecting masster muscle.
The study subjects were categorized into 5 groups consisting of 20 subjects each with the following conditions; Group 1: myofascial pain or myositis, Group 2: oral submucous fibrosis (OSMF), Group 3: habitual chewing of tobacco/arecanut without OSMF, Group 4: bruxism. Group 5 consisted of 20 healthy subjects. An ultrasonographic examination of masseter was performed in all subjects and the echogenic pattern was classified into Types I, II and III. The images were examined by two observers and inter-observer variability was assessed. Differences in internal echogenic pattern between study groups and control group was evaluated using Chi- square test.
A good inter observer agreement was noted (k value= 0.8). An equal distribution of Types II and III echogenic pattern was noted in myofascial pain/myositis group. Type II was predominant in subjects with OSMF, habitual tobacco/arecanut chewing and bruxism. Type I was predominant in controls. The echogenic pattern differed significantly from controls in subjects with myofascial pain/myositis and OSMF (p=0.00001*, 0.0237* respectively), whereas in subjects with habitual tobacco/ arecanut chewing and bruxism, it did not differ significantly from controls (p=0.2482, 0.1223 respectively).
Ultrasonographic examination of the echogenic pattern may help in understanding the nature of the disease process affecting the masseter muscle in various conditions.

Rotator cuff tendinopathy and concurrent myofascial pain may result in sleep disturbances, poor quality of life, and social dysfunction along with chronic annoying pain and progressive physical disability.
The present study aimed to assess severity of pain, physical disability, and sleep quality in patients with rotator cuff tendinopathy and concurrent myofascial pain.
Patients and This case-control study was conducted on 30 consecutive patients with rotator cuff tendinopathy without tear (impingement syndrome) and concurrent myofascial pain referred to the shoulder clinic in Shafa-Yahyaian Hospital during year 2014 (January to April). Eighteen gender and age-matched healthy individuals without any history of rotator cuff tendinopathy were included as controls. Along with baseline assessment, for determining the level of arm, shoulder and hand disability, the quick disabilities of the arm, shoulder and hand questionnaire was also used. Sleep quality was assessed by the pittsburgh sleep quality index (PSQI).
Compared to healthy individuals, the mean shoulder disability score was significantly higher in the patient group (P = 0.001). Also, regarding sleep quality, the mean score was significantly higher in the patient group when compared with healthy subjects (P = 0.002).
Patients with rotator cuff tendinopathy concurrent with myofascial pain experienced low level of sleep quality along with severe pain and physical disability. In order to improve clinical outcome of these patients, improving physical function and sleep quality in these patients is necessary.