Treatment Of Myofascial Pain Research Articles

Development and Testing of a Device to Detect Trigger Points, and Local Twitch Responses in Dry Needling Intervention

Trigger point dry needling (TrpDN) has emerged as a promising intervention for the treatment of myofascial pain. This involves insertion of a sterile filament needle directly into the trigger point (Trp), with the aim of eliciting a local twitch response (LTR). This sudden, involuntary contraction of the muscle fibers confirms the breakdown and success of TrpDN intervention. Not all LTRs are perceptible through visual observation or tactile sensation during the intervention. In search of noticeable LTR, clinicians perform Hong's technique (back-and-forth movements of needle in muscle). This results in muscle damage and causes pain and discomfort thereby limiting functional movements of patients. One important factor in the diagnosis and post intervention follow-up of TrpDN is the pain pressure threshold (PPT). Currently most of the clinicians use thumb pressure and subjective scales for confirming trigger points. These methods can introduce biasness due to its reliance on subjective factors.•In this present study, an effort has been made to assemble a device to overcome the challenges faced during assessment and treatment of trigger points.•This device can provide audiovisual feedback for LTR and can measure PPT.

Evaluation of craniocervical posture after myofascial pain treatment in adults with bruxism: A randomized clinical trial

BackgroundDespite numerous clinical studies on bruxism management, critical evaluation parameters, including the impact of bruxism pain on quality of life and secondary issues like changes in craniocervical posture, are often disregarded. Research questionEvaluate the effect of two treatments on the craniocervical posture of adult patients with myofascial pain. MethodsThis parallel randomized clinical trial included 60 patients with myofascial pain due to probable bruxism that fulfilled the study requirements. A computer-generated random sequence was used to allocate treatments: botulinum toxin-A or occlusal appliance. Follow-up time was 3 and 6 months. Kyphosis angle (α) and head posture measurement by cervical radiograph were assessed using two-way repeated measures ANOVA (alpha = 0.05). ResultsSixty patients were randomized (mean age 30 ± 7.6) and 6 were excluded from the analysis (did not attend follow-up). No statistically significant difference was observed for the head posture measure (p = 0.98) and kyphosis angle (p = 0.74). Mild pain was reported by one patient after botulinum toxin-A application. SignificanceResults indicate that craniofacial posture does not seem to be influenced by the treatment of pain in bruxers. If a better posture is desired, this should probably be targeted with other therapies. Trial registrationClinical Trials NCT03456154.

(099) HOW MUCH IS ENOUGH FOR BOTOX(R) & HOW MUCH BOTOX(R) IS ENOUGH? A REVIEW OF BOTULINUM TOXIN INJECTIONS FOR THE TREATMENT OF HYPERTONIC PELVIC FLOOR

Abstract Introduction Botulinum toxin (BT) is a useful adjunct in the treatment of hypertonic pelvic floor muscles. By blocking the release of acetylcholine, a necessary neurotransmitter for muscle contraction, it facilitates muscle relaxation. These paralytic effects effectively disrupt painful muscle spasms and help patients make further progress in physical therapy when otherwise hindered by painful muscle spasms. Despite having robust data to support the off-label use of BT for the treatment of myofascial pain, there is limited data about its use for the treatment of pelvic floor myofascial pain. Additionally, there is no data about insurance reimbursement or the financial costs to patients undergoing pelvic floor muscle treatment with BT injections. Objective 1. Determine how many injections of BT patients receive for the treatment of hypertonic pelvic floor 2. Determine insurance reimbursement and financial costs to patients undergoing pelvic floor muscle treatment with BT injections. Methods Data was first collected by building a report in Epic to identify all patients seen in our department between 1/1/2022 to 10/31/2023 for a BT-related visit. Patient were further stratified based on CPT code 96372, indicating that they received pelvic floor BT injections. Fifty-one patients were identified. Charts were reviewed to determine how frequently patients returned for BT administration & to determine how much patients had to pay for BT treatment after filing with insurance. Results A total of 51 patients received pelvic floor muscle BT injections over the course of 61 patient encounters. Forty-three patients (84%) received BT once, 6 patients (12%) received BT twice, and 2 patients (4%) received BT 3 times. Of the 8 patients who required additional BT treatment, the average time between subsequent BT injections was 83 days. At our institution, the absolute charge for 100 units of BT was $1,068.16 without insurance. All patients treated had active insurance, and all 61 patient encounters were billed through insurance. At the time of this review, 20 patients encounters (33%) were still pending review with insurance, 41 patient encounters (67%) had been reviewed. Of these 41 patient encounters, 30 (73%) were accepted through insurance; 11 (27%) were denied. Nineteen administrations of BT were completely covered by insurance (no self-pay); 11 administrations of BT were partially covered through insurance. For patients that received partial or total coverage through their insurance company, the average self-pay cost for 100 units of BT was $66.77. Conclusions Most patients required one visit for pelvic floor muscle treatments with BT, and only occasionally required more than one visit. Prospective studies are needed to quantify and quality patient’s improvement in pain following each BT treatment. In the majority of cases, when BT was filed through insurance, it was at least partially approved. Without insurance, the charge for 100 units of BT was $1,068; when approved through insurance, the average self-pay cost for 100 units of BT was $66.77. Disclosure Any of the authors act as a consultant, employee or shareholder of an industry for: Patty Brisben Foundation.

Dry Needling in Overhead Athletes with Myofascial Shoulder Pain: A Systematic Review.

The treatment of myofascial pain in athletes requires a set of rehabilitation techniques that aim to be effective quickly. In this context, dry needling (DNY) has shown interesting results due to its ability to reduce pain in the short term. Thus, the aim of this study was to investigate the role of DNY in managing myofascial shoulder pain in overhead athletes. PubMed, Scopus and Web of Science were screened up to March 2024, to identify studies that met the following inclusion criteria: overhead athletes with shoulder pain with a DNY approach for myofascial trigger points (MTrPs), RCT, case-control study, feasibility study as the study design. Exclusion criteria were studies that did not include athletes, studies that did not focus on the treatment of MTrPs with DNY, other reviews, no full-text availability and papers written in a language other than English. Out of 399 articles, 165 were excluded as duplicates. Of the 234 articles screened, only 6 articles met the inclusion criteria. A total of 6 studies were included in the systematic review. Initial results showed that DNY improved pain rapidly and in the short term; however, there is still no consensus on the minimum number and the interval between treatments. Major findings reported a rapid potential decrease in perceived pain, shoulder disability and an increase in muscle strength; in this scenario, DNY might be a valid solution in a sports rehabilitation setting.

Minimally invasive techniques in the management of muscular temporomandibular joint disorders: A five-year observational study.

To evaluate the effectiveness of three minimally invasive techniques for managing patients with myofascial pain dysfunction, determine their association with sociodemographic factors, habits, medication usage, comorbidities, treatment history, pain duration, complaint intensity, and diagnosis limitations. This five-year observational study scrutinized 1,000 medical records from individuals treated at the TMD Orofacial Dental Research Center. TMD treatments were organized into Group 1 (thermotherapy, exercises, and CBT), Group 2 (Group 1 plus intramuscular manual therapy), and Group 3 (Group 1 and Group 2 plus occlusal appliances) and correlated with sociodemographic factors, habits, prior medication usage, comorbidities, history of prior treatments, duration of pain, intensity of complaint, and diagnosis limitations or without limitations regarding the symptoms of muscular temporomandibular disorders (TMD). Treatment durability was proportionally higher in Groups II and III (p<0.05). Although no significant differences were found for habits (p= 0.051) and pain duration (p= 0.001), clenching was more prevalent in Groups II n= 77 (57.0%) and III n= 39 (63.9%) and among those with therapy duration equal to or greater than 6 months for n=102 (59.3%). Statistically significant correlations were noted between age and education (rho=-0.198; p<0.001) and between pain duration and treatment durability (rho=0.317; p<0.001). Intraoral devices do not constitute the primary treatment for myofascial pain. For cases of prolonged pain, comorbidities, limited mouth opening, and a history of prior medication or treatments, a splint combined with other therapies is recommended for effective management. Key words:Temporomandibular disorders, myofascial pain, occlusal appliances, clinical diagnosis, thermotherapy, exercise therapy, cognitive behavioral therapy.

Efficacy of capacitive-resistive therapy on the treatment of myofascial pain – A randomized control trial

BackgroundMyofascial pain syndrome is a painful musculoskeletal condition with muscle spasm, referred pain, stiffness, restricted range of motion. Capacitive-resistive diathermy heats deep tissues by transferring energy through radiofrequency waves. Although this modality is used to treat various musculoskeletal disorders, there is no specific data on myofascial trigger points. Thus, we aimed to evaluate the effectiveness of capacitive-resistive diathermy on the myofascial trigger points. MethodsThirty-six volunteers with active myofascial trigger points were included. Patients were randomly and equally allocated into two groups. Group-1 is the capacitive-resistive diathermy treatment group; Group-2 is the placebo capacitive-resistive diathermy (PG). Visual analog scale (VAS), pain pressure threshold (PPT), neck disability index (NDI), neck range of motion (nROM), Short form-36 (SF-36) were used as outcomes before and after the intervention. ResultsIn both groups, VAS, PPT, NDI score significantly improved within the groups (p < 0.05). The CRG showed a statistically significant improvement in nROM for flexion, extension, and rotation (p < 0.05). However, ROM increase in CRG is not superior to PG (p > 0.05). ConclusionsThere was no significant difference between the two groups. We thought positive results in the PG might attributed to doing exercise. As a result, capacitive-resistive diathermy is not superior to exercise, but can be used as an adjuvant modality in myofascial trigger points treatment.

An Evidence-Based Treatment of Myofascial Pain and Myofascial Trigger Points in the Maxillofacial Area: A Narrative Review.

Myofascial pain (MFP) is characterized by localized pain in the maxillofacial region attributed to the presence of hypersensitive spots known as trigger points (TrPs). This condition is particularly prevalent in the maxillofacial area, warranting a comprehensive examination of evidence-based management techniques. This review aims to equip healthcare professionals with a more profound insight into evidence-based MFP management techniques, facilitating improved patient care and treatment outcomes. In this review, we conducted a thorough literature search using Google Scholar, Scopus, Web of Science (WOS), and MEDLINE, with the keywords "Myofascial pain syndrome," "Pain," and "Orofacial pain." Articles were selected based on their relevance to the study's objective. Pharmacological interventions, such as analgesics and muscle relaxants, are frequently prescribed. Additionally, a range of non-pharmacological modalities, including transcutaneous electrical nerve stimulation (TENS), ultrasound therapy, topical applications, dry needling, TrP injections, oral myofunctional therapy, and stretching exercises, have demonstrated efficacy in MFP management. The authors hope to give clinicians a more thorough understanding of the therapies for MFP by conducting a rigorous evidence-based evaluation of pharmacologic and non-pharmacological treatments. Our findings support the use of a combined approach that integrates both pharmacological and non-pharmacological strategies for the holistic management of TrPs.

Non-Pharmacological Pain Treatment of Patients with Myofascial Pain Syndrome of the Masticatory Muscles-Case Series.

Myofascial pain is the most common cause of chronic pain in the masticatory region and can be assessed through clinical analysis and muscle palpation. Generally, it appears with headache and orofacial pain associated with sensitive points (trigger points) due to the excessive contraction of the masticatory muscle fibers. The study aims to evaluate how a correct treatment of myofascial pain can improve the life quality of affected patients. In this case series, 300 patients with myofascial pain were divided into two groups: 150 with intra- and extra-articular disorders and 150 with only extra-articular disorder. Each group included 75 males and 75 females. All the patients were treated with gnathological therapy through passive aligners and biofeedback exercises for four months. They underwent pain assessment (through a visual analogue scale and muscular palpation test) before, during, and after the treatment, as well as nuclear magnetic resonance of the temporomandibular joint before and after the gnathological treatment. The treatment considerably reduced the pain in all patients, without drugs, in four months according to the visual analogue scales and the palpation test. The temporomandibular magnetic resonance in each patient was similar before and after the gnathological treatment. The improvement in pain did not depend on a change in the relationship between the articular condyle and the disc.

103 Botulinum Toxin Type A (Botox) Injection for Plantar Fasciitis: An Audit of Findings

Abstract Introduction Plantar fasciitis is commonly seen in the musculoskeletal clinic and accounts for around 8-10% of running injuries. NICE recommended corticosteroid injections for patients whose “symptoms are having a significant impact on the person”, however, symptoms lasted for 4 weeks post injection. The use of Botox for the treatment of myofascial pain has increased, with studies showing greater reduction in patients symptoms and improved duration of action. Material and methods 42 patients (27 male, 15 female) were included in this audit. All patients received 100 units of botox. Inclusion/Exclusion criteria All patients who had clinically diagnosed plantar fasciitis and had received the first line treatments of stretching and orthotics. Patients yet to begin a stretching program or had systemic disease or previous surgery were excluded. Outcome measure A patient assessed (VAS) and a physician assessed (Heel Tenderness Index) outcome measure was used. Results 42 patients were assessed. VAS All the patients reported an improvement in symptoms at the 4 week follow up, 38 (90.48%) of whom reported pain free. Of the remaining 4 all advised their symptoms had improved by at least 50% HTI 38 (90.48%) had no pain on palpation of the heel post injection, whilst prior to the injection all patients had pain in differing degrees. 15 patients (35.71%) had severe pain prior to the injection, post injection no patient had severe pain. 40 (95.24%) patients had improved HTI scores. Conclusions Botox is effective in the treatment of plantar fasciitis, however, its effectiveness in the longer term needs to be assessed.

Correlation between Functional Magnetic Resonance and Symptomatologic Examination in Adult Patients with Myofascial Pain Syndrome of the Masticatory Muscles

Myofascial pain syndrome is the most common cause of TMD, characterised by trigger points of skeletal muscles in the masticatory region. Patients with myofascial pain suffer from orofacial pain and headaches. Parafunctional activity such as unconscious teeth clenching predisposes a higher possibility of developing myofascial pain. We report the results of a prospective study of 10 patients with a myofascial pain diagnosis related to TMD who underwent treatment with passive aligners and biofeedback exercise. All patients underwent pain assessment (visual analogic scale and muscular palpation test), measurement of masseters thickness with Dolphin Imaging Software, nuclear magnetic resonance of the temporomandibular joint, and functional nuclear magnetic resonance of the brain before and after gnathological treatment. The same patients underwent pain assessment (VAS and palpation test) for the entire duration of their treatment. This study aimed to assess if the results obtained with the therapy were repeatable using functional magnetic resonance imaging. This enabled us to correlate a subjective datum (pain) to an objective one (variation in the functional connectivity of the networks correlated to pain perception). According to the pain assessment, the treatment considerably reduced the pain in 9 out of 10 patients. Furthermore, the functional nuclear magnetic resonance of the brain showed similar modifications in the cerebral pain and default mode networks in these nine patients. The change in the masseter muscle dimensions was not correlated with the modification of pain. Statistical analysis was performed to evaluate the effects of treatment on VAS and trigger point stimulation and on the length and width of the masseter muscle. Linear regression analysis was used to assess a correlation between the modification of the masseter muscle dimension and the amendment of VAS. A paired t-test was used to evaluate statistically significant differences in the connectivity of brain areas of the DMN and the pain network. Our results suggest that the proper treatment of myofascial pain can reduce pain and consistently modify the functional activation of the cerebral pain and default mode networks. Overall, the treatment was repeatable because brain network changes were homogeneous in all patients and did not relate to the intracapsular TMJ condition but only to pain symptoms.

Efficiency of occlusal splint therapy on orofacial muscle pain reduction: a systematic review

BackgroundThis systematic review aims to examine the existing original studies to determine the effectiveness of occlusal splints (OSs) in the management of orofacial myalgia and myofascial pain (MP) in comparison with no treatment or other interventions.Materials and methodsBased on the inclusion and exclusion criteria of this systematic review, randomized controlled trials were qualified, in which the effectiveness of occlusal splint therapy in the management of muscle pain was examined in comparison with no treatment or other interventions. This systematic review was conducted according to the guidelines of Preferred Reporting Items for Systematic Reviews and Meta-Analysis 2020. The authors searched three databases (PubMed, CINAHL (The Cumulative Index to Nursing and Allied Health Literature) and Scopus) for English publications published between January 1, 2010, and June 1, 2022. The last database search was carried out on June 4, 2022. Data were extracted from the included studies and assessed for risk of bias using the revised Cochrane risk-of-bias tool for randomized trials.ResultsThirteen studies were identified for inclusion in this review. In total, 589 patients were diagnosed with orofacial muscle pain who underwent education and various forms of therapy including different types of OSs, light emitting diode therapy, acupuncture, low-level laser therapy, device-supported sensorimotor training, Kinesio Taping, myofunctional therapy, and physical therapy. All studies included demonstrated a high risk of bias.ConclusionsThere is insufficient evidence regarding whether OS therapy in the treatment of orofacial myalgia and MP offers an advantage over other forms of interventions or no treatment. Further reliable clinical studies in this area are needed to improve the quality of research, which should be performed with larger groups of blinded respondents and controls.Clinical relevanceDue to the large-scale nature of orofacial muscle pain, it is assumed that each dental clinician will meet patients with orofacial muscle pain repeatedly in daily practice; hence, the review of the effectiveness of OSs in the management of orofacial myalgia and MP is necessary.

Fu's Subcutaneous Needling for Knee Osteoarthritis Pain.

Fu's subcutaneous needling (FSN) is a new acupuncture and dry needling technique based on traditional Chinese medicine. It rapidly produces long-lasting effects in soft tissue injuries, particularly in painful musculoskeletal conditions, by providing stimulation primarily in the subcutaneous area. Osteoarthritis (OA) is the most common joint disease in adults worldwide and is often accompanied by a painful syndrome of structural changes in the peripheral joints of the knee. However, the etiology of OA pain is not fully understood, though myofascial trigger points (MTrPs) are commonly found in the lower limb muscles (so-called "tightened muscles") of patients with knee OA. FSN has been used in many fields for the treatment of acute pain problems and can relieve muscle contraction from MTrPs, thereby improving the local circulation. This study recruited patients with pain from knee OA into an FSN group or a transcutaneous electrical nerve stimulation (TENS) group with three treatment sessions and a follow-up over the course of 2 weeks. The results showed that FSN was effective in treating soft tissue pain around the knee with OA. This study aimed to establish and visualize three key technical indicators during FSN therapy, including the FSN needle insertion point and layer; the frequency and duration of the swaying movement; and the manipulation of the reperfusion approach. These findings have great potential for future applications in myofascial pain treatment, especially for pain management. Following this protocol could enhance FSN skills.

Trigger Point Deactivation in MPDS: A Comprehensive Guide to Non-invasive Therapeutic Modalities

Myofascial pain syndrome MPS is defined as pain origination due to the activation of myofascial trigger points present in taut bands of skeletal muscle. This article aimed to review the existing hypothesis regarding the deactivation of trigger points in myofascial region as a treatment modality to reduce the muscle pain. Various pharmacologic interventional methods were reviewed such as are physiotherapy occlusal therapy anti-inflammatory and analgesics manual and massage technique muscle relaxants transcutaneous electric nerve stimulation laser therapy ultrasound therapy and botulinum toxin which may be attempted in severe cases. Through a critical evidence-based review of the pharmacologic and non-pharmacologic treatment options this article aims to provide clinicians with a complete comprehensive knowledge of the interventions for deactivation of trigger points in the treatment of myofascial pain.

Detection and effectiveness of treatment of myofascial pain and temporomandibular joint pathologies in adult patients with orthodontic pathology

BACKGROUND: At the orthodontists clinic, patients with pain in the maxillofacial region and internal disorders of the temporomandibular joint (TMJ) are not uncommon. These pathological conditions are characterized by the complexity of interdisciplinary therapy and frequent recurrence.&#x0D; AIM: To analyze the detectability and effectiveness of treatment of myofascial pain disorders and internal disorders of the TMJ in adult patients with dental anomalies.&#x0D; MATERIAL AND METHODS: Case histories of 300 adult patients with dental anomalies who underwent examination and treatment in a multidisciplinary dental clinic were retrospectively analyzed. The study included patients who received orthodontic treatment for at least 5 years. The prevalence and structure of internal disorders of the TMJ and myofascial pain disorders were assessed, and their correlation was analyzed.&#x0D; RESULTS: Orthodontic treatment was more often needed by patients with myofascial pain (71.5%), followed by those with myofascial facial pain syndrome (28.3%). In these patients, internal TMJ disorders and maxillary anomalies of class II according to Engl with unilateral distal occlusion, deep bite, and class I with crowding of teeth were more often detected. Internal TMJ disorders with concomitant myofascial pain disorders in the form of myofascial pain were observed in 82.4% of the patients. Myofascial pain disorders without internal TMJ disorders were registered in 17.4% of the patients. The overall effectiveness of the treatment of internal TMJ disorders and myofascial pain disorders was 46.4%, no lasting improvement was observed in 35.7%, deterioration was recorded in 17.8%, and relapses were noted in 60.7%. In the treatment of myofascial pain disorders without internal TMJ disorders, the overall effectiveness of treatment was 5.5%; stabilization, 50.0%; and deterioration, 44.4%.&#x0D; CONCLUSION: Myofascial facial pain is very difficult to treat. The combination with internal TMJ disorders creates significant and sometimes insurmountable difficulties in the orthodontic treatment of adults. All these forces specialists to look for new approaches to optimizing orthodontic treatment of TMJ pathology and myofascial pain disorders.

Fascial Manipulation Method Is Effective in the Treatment of Myofascial Pain, but the Treatment Protocol Matters: A Randomised Control Trial-Preliminary Report.

Background: There are many therapeutic methods targeting fascia. However, the only method whose basic assumption is to eliminate the densification of fascia is Fascial Manipulation. Objective: To evaluate the effectiveness of various Fascial Manipulation (FM) protocols in reducing myofascial pain. Design: Randomized control trial. Subjects: A total of 54 individuals, aged 18–29 years, with musculoskeletal pain for at least 1 week. Methods: The patients were divided into four groups subjected to different treatment protocols: group 1—underwent the standard FM treatment protocol (STP), group 2—modified protocol (MTP), group 3—modified protocol 2 (MTP2), and the control group (CG)—did not undergo any therapy. Each protocol involved three treatments at intervals of 7–10 days and a follow-up examination after 30 days. The outcome was pain level measured using the VAS. Results: In the STP, all the measurements showed a significant decrease in pain level—the mean difference was 2.077 after the first treatment, 3.462 after the third treatment and 3.385 in the follow-up. In the MTP, a significant mean difference was noted after the third treatment, 3, and in the follow up, 2.4. In the MTP2, it was noted after the third session, 2, and in the follow up, 2.25. Only the CG group did not display significant changes. Conclusions: FM-based therapy results in pain relief. However, there are differences in the dynamics and durability of the results depending on the chosen protocol.

Subacute postoperative myofascial pain diagnosed and treated successfully by ultrasound: a case after laparoscopic hepatectomy

BackgroundMyofascial pain syndrome is one of the causes of prolonged postoperative pain after abdominal surgery. However, diagnosis and treatment of myofascial pain syndrome, especially its myofascial trigger point (MTrP), have not been well established.Case presentationA 55-year-old man experienced severe subacute abdominal pain after laparoscopic hepatectomy despite aggressive postoperative pain management. He had a positive Carnett’s sign, indicating abdominal wall pain, 2 weeks after the surgery. Ultrasonography showed a hyperechoic spot surrounded by a hypoechoic area in the inner abdominal oblique muscle under the palpable spot that fulfills the criteria of MTrP. The echogenic MTrP disappeared after repetitive ultrasound-guided trigger point injections (USG TPIs) with pain relief.ConclusionsOur present case indicates that diagnosing myofascial pain by visualizing the echogenic MTrPs in the abdominal muscles, and subsequent USG TPIs, might provide an accurate maneuver for diagnosis and treatment of subacute myofascial pain after abdominal surgery.

Immediate Effects of Extracorporeal Shock Wave Therapy in Fascial Fibroblasts: An In Vitro Study.

Extracorporeal shock waves (ESWs) are used in the treatment of soft tissue injuries, but their role in the treatment of myofascial pain has not yet been demonstrated. The aim of this study was to investigate changes in cell biology of fibroblasts derived from deep/muscular fascia following treatment with ESWs. Primary fascial fibroblasts were collected from small samples of human fascia lata of the thigh of three volunteer patients (two men, one woman) during orthopedic surgery, and put in culture. These cells were exposed to 100 impulses of 0.05 mJ/mm2 with a frequency of 2.5 Hz, using 3D-printed support. This study demonstrated for the first time that ESWs can lead to in vitro production of hyaluronan-rich vesicles immediately after the treatment. At 1, 4, and 24 h after treatment, Alcian blue and Toluidine blue staining; immunocytochemistry to detect hyaluronic acid binding protein (HABP), collagen I, and collagen III; and transmission electron microscopy demonstrated that these vesicles are rich in hyaluronan and collagen I and III. The diameter of these vesicles was assessed, highlighting a small size at 1 h after ESW treatment, whereas at 4 and 24 h, they had an increase in the size. Particularly evident was the release of hyaluronan-rich vesicles, collagen-I, and collagen-III starting at 1 h, with an increase at 4 h and maintenance by 24 h. These in vitro data indicate that fascial cells respond to ESW treatment by regulating and remodeling the formation of extracellular matrix.

Effects of botulinum toxin in patients with myofascial pain related to temporomandibular joint disorders: A systematic review.

Botulinum toxin is used as an alternative for the treatment of chronic refractory myofascial pain derived from temporomandibular disorders (TMDs). It is important to establish the benefits of botulinum toxin in this type of symptomatology. The aim of the study was to conduct a systematic review in order to evaluate the effects of botulinum toxin in patients with myofascial pain related to temporomandibular disorders. The search was carried out systematically, without limitations of language or year of publication, until February 2021. The databases searched included PubMed, Web of Science, Scopus, The Cochrane Library, and Latin American and Carribean Health Sciences Literature (LILACS). Partial gray literature was searched using Google Scholar, ClinicalTrials.gov, OpenGrey, and the reference lists of selected articles. Randomized controlled clinical trials evaluating the effects of botulinum toxin in the treatment of myofascial pain were included. The risk of bias was assessed with the Cochrane RoB 2.0 tool, and the The Grading of Recommendations Assessment, Development and Evaluation (GRADE) approach was used to determine the certainty of the scientific evidence. A total of 900 studies were retrieved, out of which only 8 randomized clinical trials were selected. From these 8 studies, the data of a total of 314 patients, predominantly women, between the ages of 18 to 75 years was obtained. After the assessment of the studies with the RoB 2.0 tool, 7 studies showed some concerns regarding the reported results and only one was at a low risk of overall bias. The analysis of the studies has shown that low doses of botulinum toxin are effective in the treatment of refractory myofascial pain associated with temporomandibular disorders. The studies presented mediumto low-certainty evidence..

Changes in Maximum Mandibular Mobility Due to Splint Therapy in Patients with Temporomandibular Disorders.

Splint therapy is widely used in the treatment of myofascial pain, but valid studies on the efficacy of this therapy are rare. The purpose of the present study was to investigate which qualifiable and quantifiable effects of splint therapy are detectable. For this purpose, 29 patients (21 women, mean age 44.6 ± 16 years) diagnosed with myofascial pain (RDC/TMD) were investigated in this prospective clinical trial (10/6/14An). Patients were treated with Michigan splints applied overnight for three months. Before (T1) and after three months of treatment (T2), patients were registered with an electronic ultrasound device with qualitative and quantitative evaluation of the registrations and a qualitative assessment of pain symptoms using a verbal analog scale. Significant differences were found between maximum mouth opening (MMP) (p < 0.001) and right condylar movement (CM) at MMP (p = 0.045). Qualitative assessment revealed that 24 of 29 patients experienced an improvement in pain symptoms, 17 of whom experienced complete remission. The results of the qualitative and quantitative analysis provide indications of the effectiveness of the splint therapy. In addition to quantitative measurements, the ultrasound facebow technique was also able to provide qualitative information.

Inflammatory Biochemical Mediators and Their Role in Myofascial Pain and Osteopathic Manipulative Treatment: A Literature Review.

Chronic inflammatory pain conditions, specifically myofascial pain (MFP), account for an overwhelming percentage of office visits every day. The combination of the high cost of its treatment and frequent patient visits makes MFP a critical pathology to be investigated. Sharpening our understanding of the molecular mechanisms within MFP will expedite the enhancement of therapeutic approaches. Inflammation plays a critical role in the pathophysiology of MFP. The chief inflammatory mediators of interest in this review related to MFP are interleukin 1β (IL-1β), IL-6, and tumor necrosis factor-α (TNF-α). This review aimed to determine the impact of inflammatory mediators on fibroblasts and satellite cells, specifically their role in muscle injury and regeneration. Blocking pro-inflammatory mediators such as IL-1β, IL-6, and TNF-α in these cell types could prove to be an effective treatment for MFP. An osteopathic manipulative treatment (OMT) modality, specifically indirect counterstrain therapy, was investigated in the hopes of elucidating a reduction in particular cytokines. In addition, myofascial release (MFR) therapies (OMT modality) were explored as a potentially effective treatment through the acceleration of wound healing, stimulation of muscle regeneration, and decreased inflammation via altered fibroblast activity. Pharmacologic agents such as non-steroidal anti-inflammatory drugs (NSAIDs) are commonly used to treat MFP but have a higher adverse side effect profile compared to OMT therapy. The optimal management of MFP is likely multifactorial, and more treatment modalities must be explored.This literature review analyzed 17 peer-reviewed articles specifically related to MFP management and the role of inflammation in MFP. Chronic inflammation from other etiologies was excluded. Our aim was to elucidate the biochemical mechanisms underlying MFP and inflammation in an effort to promote the medical community's understanding of treatment modalities for this chronic condition. This study revealed that various OMT techniques such as MFR and counterstrain lead to changes on the cellular level in MFP. Discovering similar effects on biochemical inflammatory markers with non-pharmacologic treatment modalities was an exciting revelation and one that could potentially change the way physicians address pain management.