Trigger points are hypersensitive taught bands of muscle. The pain is related to a discrete, irritable point in skeletal muscle or fascia, not caused by acute local trauma, inflammation, degeneration, neoplasm, or infection.
The painful point may be felt as a band in the muscle and a twitch response may be elicited on stimulation of this point.
Palpation of the trigger point produces the patient’s complaint of pain, and the pain radiates in a distribution typical of the muscle harboring the trigger point. The pain may not be explained by findings on neurological examinations. Myofacial triggerpoints are tiny contraction knots that develop in an injured or overworked muscle, and are often the source of nagging pain.
Trigger point injections are used to treat a wide variety of complaints. A needle is used to dispense a saline solution, or a numbing agent to decrease the pain levels. Trigger point injection therapy is particularly good for chronic musculotherapy disorders. Migraines, whiplash, sciatica, plantar fasciitis, repetitive use disorders, TMJ, cervical, thoracic, and lumbar pain are often greatly improved by using this method.
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