http://physiomaxwellness.ca/dry-needling/

Dry Needling is increasingly becoming popular amongst physiotherapy, chiropractic, massage therapy and physician’s clinics as it is very effective in treating myofascial dysfunctions and stubborn, tight muscles that are difficult to release. This technique involves repeated insertion of an acupuncture needle into the muscle belly (often in the trigger or motor point) until both the patient and the practitioner feel a local twitch response. This twitch “resets” the tight muscle, allowing it to relax and lengthen to its normal position, thereby decreasing pain. Dry needling can even be used at each spinal segment, which corresponds to the symptoms felt in the extremities (arm, leg), which further helps to relax the entire neurological system,calming down the musculoskeletal system.