Clinical Research Directory

Effect of Vagus Nerve Stimulation on Trapezius Trigger Point

This randomized controlled trial aimed to evaluate the efficacy of non-invasive vagus nerve stimulation (nVNS) compared to ischemic compression (trigger point massage) and exercise in treating trigger points in the upper trapezius muscle. Ninety participants aged 18-55 with at least two trigger points were randomly assigned to three groups: nVNS, ischemic compression, or exercise (control). Interventions were administered over 10 sessions (3 times per week). Outcomes included pain intensity (Visual Analog Scale, VAS), trigger point number, pain pressure threshold (algometer), neck function (Copenhagen Neck Functional Disability Scale, KBFÖS), well-being (WHO-5 Well-Being Index), and functional mobility. The nVNS group demonstrated statistically significant improvements in all outcomes compared to the other groups (p \< 0.05).

Effect of Dry Needling Plus Vibration on Myofascial Trigger Points in Individuals With Nonspecific Low Back Pain

This study evaluates whether adding mechanical vibration to dry needling (DN+V) is not inferior to dry needling alone (DN) for reducing low back pain intensity in adults with nonspecific low back pain (NSLBP), when both interventions are combined with a structured exercise program. The primary hypothesis is non-inferiority in pain reduction (Numeric Pain Rating Scale, NPRS) at 1 week after treatment, using a non-inferiority margin of 1 point on the 0-10 NPRS scale. If non-inferiority is confirmed, secondary analyses will explore whether DN+V is superior to DN alone in patient-reported treatment acceptability, pain experienced during the intervention, and post-needling soreness. Participants will be randomly assigned to one of two parallel groups: DN plus exercise, or DN+V plus exercise. Outcomes will be assessed at baseline and at multiple time points up to 4 weeks after treatment, including pain intensity, disability, acceptability, muscle strength, pressure pain threshold, quality of life, and global impression of change. Direct and indirect costs associated with both interventions will also be collected to provide data for a future economic evaluation of the cost-effectiveness of DN+V compared with DN.

Comparative Analysis of Dry Needling Techniques for Orofacial Myofascial Pain

This study aims to compare the clinical effectiveness and individual comfort of three distinct dry needling techniques (dynamic, static, and hybrid) for managing orofacial myofascial pain. Myofascial pain is a highly prevalent manifestation of temporomandibular disorders (TMD), characterized by painful trigger points in the masticatory muscles, such as the masseter and temporalis, which cause pain, muscle tenderness, and jaw movement limitations. While dry needling is widely recognized as an effective minimally invasive therapy to deactivate these trigger points, there is still a lack of consensus in scientific literature regarding the standardization of application protocols. To address this gap, this randomized, triple-blind, parallel-group clinical trial will enroll 45 individuals diagnosed with myofascial pain according to the Diagnostic Criteria for Temporomandibular Disorders (DC/TMD). Participants will be randomly allocated into three equal groups (15 individuals per group): Group 1 will receive dynamic dry needling (fanning technique); Group 2 will receive static dry needling (needle kept in situ for 10 minutes); and Group 3 will receive a hybrid approach (combining an initial static period followed by dynamic manipulation). The primary outcome will evaluate changes in self-reported pain intensity using a Visual Analog Scale (VAS) from baseline to 7 days post-intervention. Secondary outcomes will assess changes in pressure pain thresholds (PPT) via digital algometry, mandibular range of motion via digital caliper measurements, and the subjective perception of comfort and acceptability of each technique. Evaluations will be conducted at baseline, immediately post-intervention, at 7 days, and at 15 days of follow-up. The findings are expected to contribute to the standardization of more effective and comfortable clinical protocols for managing orofacial pain.

Efficacy of Adding Greater Occipital Nerve Block to Trigger Point Injection in Patients With Neck Pain

Study Title: Evaluation of the Effectiveness of Adding Greater Occipital Nerve Block to Trigger Point Injection in Patients with Neck Pain Due to Upper Trapezius Trigger Points: A Single-Blind Randomized Controlled Trial Purpose of the Study: This study aims to evaluate whether adding a Greater Occipital Nerve (GON) block to the standard trigger point injection treatment provides better pain relief and improves daily function in patients with neck pain caused by trigger points in the upper trapezius muscle. Trigger points are small, sensitive spots in muscles that can cause significant pain and discomfort. While both trigger point injections and GON blocks are common treatments for neck and head pain, it is not yet clear if combining these two methods offers better results. Why is this study important? Neck pain related to trigger points in the upper trapezius muscle is a frequent problem, but there is limited research on the effectiveness of combining trigger point injections with GON blocks. This study will provide important information on whether the combination therapy can reduce pain more effectively and improve patients' quality of life and ability to perform daily activities. Who can participate? Adults aged 18 to 65 years old Diagnosed with myofascial pain syndrome (MAS) based on specific clinical criteria, including the presence of trigger points in the upper trapezius muscle Experiencing neck pain lasting longer than 3 months Pain intensity rated 5 or higher on a scale of 0 to 10 Who cannot participate? Pregnant or breastfeeding women, children, elderly people, unconscious or critically ill patients Patients with allergies to local anesthetics or steroids Individuals with bleeding disorders or infections near the injection site Patients with serious psychiatric or neurological diseases, or other medical conditions that may affect study results Those who have recently received similar treatments or surgery for neck or shoulder problems Study Design and Procedures: The study will include 60 patients meeting the criteria, randomly assigned to two groups using a balanced randomization method. Group A will receive only trigger point injections into the upper trapezius muscle using a mixture of lidocaine and saline solution. Group B will receive both trigger point injections and an ultrasound-guided GON block, which involves injecting a combination of local anesthetics and steroid near the greater occipital nerve to reduce pain signals. Both groups will receive the same home exercise program focusing on stretching and strengthening neck muscles to support recovery. Patients will be encouraged to perform these exercises regularly and will be followed up weekly by phone to check their progress. The doctor assessing patients' progress will not know which treatment the patient received, to ensure unbiased results. Assessments: Patients will be evaluated at three different times: before treatment, 1 week after treatment, and 4 weeks after treatment. Assessments include: Pain intensity and quality (using Visual Analog Scale and McGill Pain Questionnaire) Neck disability and ability to perform daily activities (Neck Disability Index) Quality of life (Nottingham Health Profile) Neck joint movement and position sense (using clinical tests with special equipment) Posture evaluation (measuring head position using photography) Expected Outcomes: The main goal is to determine if the combined treatment of trigger point injection plus GON block is more effective than trigger point injection alone in reducing pain, improving neck function, and enhancing quality of life. Duration and Follow-Up: The study is planned to last 12 months. Patients will be closely monitored during and after treatment to ensure safety and to collect necessary data. Potential Benefits and Risks: Participants may experience pain relief and improved function if the combined treatment is effective. Risks include mild discomfort or side effects related to injections, which will be minimized by experienced medical staff.