Clinical Research Directory

How Dry Needling at the Neck Affects Shoulder Movement, Strength, Pain, and Shoulder Circulation

Segmental facilitation, originally proposed by Korr in the 1950s, suggests that certain spinal segments can become hyperexcitable, leading to chronic pain development. In a facilitated segment, neurons governing sensory, motor, and autonomic functions are in a state of heightened sensitivity, making them responsive to normally weak stimuli. Clinical signs include non-fatigable muscle weakness, brisk reflexes, muscle hypertonicity, tenderness upon palpation, and trophic changes like an orange-peel appearance in the affected segment's innervated areas. It's hypothesized that increased synaptic excitability in facilitated segments could cause vasoconstriction and reduced blood flow, contributing to trophic changes and muscle hypertonicity. Manual therapies like dry needling have been shown to alleviate muscle inhibition in the extremities. Previous studies have demonstrated that mobilization of the C5-6 joint can reduce non-fatigable weakness in shoulder external rotators primarily innervated by these segments. However, the neurophysiological effects of dry needling (DN) on muscle inhibition due to a facilitated segment remain unclear. While DN has been observed to increase local tissue blood flow, its potential to mitigate the clinical signs of segmental facilitation is uncertain. While DN has been observed to increase local tissue blood flow, its potential to mitigate the clinical signs of segmental facilitation is uncertain. Therefore, this project aims to investigate whether DN applied at a facilitated segment could normalize blood flow to its associated muscles. Specifically, this study will explore whether DN at the C5-6 level improves blood flow in the infraspinatus muscle, enhances shoulder range of motion, and influences muscle strength over time. The secondary purpose is to determine whether C5-6 DN will reduce the number of tender points in the muscles supplied by C5-6.

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

Low back pain is one of the most common health issues worldwide, and in most cases, this pain is nonspecific low back pain (NSLBP). NSLBP is characterized by the inability to determine the real source of the pain and commonly presents with myofascial trigger points (MTrPs) in the muscles related to the lumbar region. One of the most widely used techniques for treating NSLBP by targeting MTrPs is dry needling (DN), a technique that involves inserting a needle to produce a mechanical effect capable of "deactivating" the MTrP and thereby alleviating its symptoms. However, some studies have concluded that other techniques are more effective than DN, such as percutaneous electrolysis (PE). When using the PE technique, it appears that adding a galvanic current enhances the effects of DN. Nonetheless, this poses a greater risk to the patient, as the galvanic current could damage nervous tissue if it comes into contact. For this reason, it is proposed to investigate whether other physical agents that are not electrical could enhance the effect of DN without increasing its risk. This is the case for vibration, a stimulus that has already been used successfully for the treatment of MTrPs, allowing us to investigate whether adding vibration to DN introduces therapeutic capabilities that: * Maintain or increase the effectiveness of DN in terms of pain and functional capacity. * Do not add risks for the patient, unlike PE. * Are less painful than DN and cause less post-needling pain than that generated after successive needle insertions with DN. Emphasizing these adverse effects is necessary since most clinical trials do not report these variables, which is fundamental for describing the safety of invasive techniques. Following this idea, the present project will analyze a new invasive therapy for the treatment of MTrPs: dry needling with vibratory stimulus (DN+V), for which the following hypotheses are proposed: * DN+V, instead of using an electrical stimulus like PE that could cause damage to some tissues, will apply vibration to the DN needles to increase the mechanical stimulus exerted on the MTrP, expecting greater benefits in terms of pain, functional capacity, muscle strength, and other variables of interest in individuals with NSLBP, and possibly requiring less treatment time than DN. * In DN, the repeated insertions and withdrawals of the needle in the MTrP provoke a hemorrhagic and inflammatory reaction that translates into hypersensitivity and microscopic tissue injury in the muscle, causing pain during treatment and post-needling pain for the following 24-32 hours. Another study showed that PE caused less post-needling pain than DN, which may be due to the fact that, unlike DN, it is common in PE to only perform a single puncture with each needle and not mobilize them. * The methodology for DN+V will be the same as for PE, with a single puncture and no needle manipulation, so it is expected that DN+V, being less invasive than DN, will reduce pain during treatment and post-needling pain compared to that generated by DN. There are studies that support this hypothesis, concluding that needle manipulation in DN produces greater post-needling pain than DN without needle manipulation.

Physiotherapy Dry Needling Accuracy

The goal of this clinical trial is to learn if the addition of cadaver review improves: * the accuracy of physiotherapists who practice dry needling. * the perceived safety of dry needling by physiotherapists. Researchers will compare the effects of an anatomy review using cadaver material to that of an educational intervention not related to anatomy to see if the anatomy review improves the needling accuracy and safety of physiotherapist who practice dry needling as compared to the control intervention of education not related to anatomy. Participants will: * Needle three muscles related to safety and/or accuracy using ultrasound imaging to gather accuracy and safety measurements. * Take an initial knowledge exam capturing their knowledge on needling safety. * Be randomized into a control group or intervention group. * The control group will receive an online educational session not related to anatomy. * The intervention group will receive a cadaver anatomy review class focused on high-risk area. * Re-take a knowledge exam after their course (either cadaver lab or on-line education) to capture any change. * Needle the same three muscles again using ultrasound to capture accuracy and safety measurements. If reviewing anatomy using cadaver materials improve physiotherapists needling accuracy and safety, then this educational intervention could be recommended to be added to dry needling course instruction.

Dry Needling and Shoulder Muscle Blood Flow, Motions, and Pain Sensitivity in Individuals with Shoulder Pain

Shoulder pain is one of the most common reasons people consult with their primary health care provider, and 40-50% of these patients with shoulder pain continued to complain of persistent symptoms after 6 to 12 months. It has been suggested that the presence of myofascial trigger points (MTrPs) may contribute to the chronicity of shoulder symptoms. An MTrP is a hyperirritable taut band of tissue within a muscle that produces pain when stimulated MTrPs are common in patients with shoulder disorders and occur most often in the infraspinatus muscle of a painful shoulder MTrPs were associated with an acidic biochemical environment with elevated levels of inflammatory mediators, neuropeptides, and proinflammatory cytokines such as bradykinin and calcitonin g-related peptide. It was hypothesized that metabolic demands on muscle and capillary constrictions may contribute to the development of MTrPs. To date, only a few studies have examined the vascular environment of MTrPs and surrounding areas before and after dry needling. No studies have yet examined whether dry needling would change blood flow in patients with shoulder pathology. Therefore, the purpose of this pilot study is to examine the effect of dry needling on blood flow of the infraspinatus muscle using color Doppler imaging in individuals with shoulder pain. The secondary purpose is to examine the effect of DN on shoulder motion and sensitivity to pressure in individuals with shoulder pain.

Dry Needling Versus Dry Cupping on Pain and Disability in Cervicogenic Headache Patients

This study aims to compare the added effects of dry needling and dry cupping to conventional physical therapy on headache pain intensity, headache frequency, headache duration, upper cervical range of motion, and disability levels in patients with cervicogenic headache. It will be assumed that: * All patients will follow all the given instructions strictly during the study duration, regarding the assessment and the treatment procedure. * All participants will be evaluated under the same environmental conditions.