Trigger Point Dry Needling (TDN) is a treatment for muscular tightness and spasm which commonly follows injuries and often accompanies the degenerative process. The muscular tightness and spasm will cause compression and irritation of the nerves exiting the spine. When the nerves are irritated, they cause a protective spasm of all the muscles to which they are connected. gis may cause a peripheral; diagnosis, such as carpel tunnel, tendinitis, osteoarthritis, decreased mobility and chronic pain. small thin needles are inserted in the muscles at trigger points causing the pain referral. The muscles would then contract and release, improving flexibility of the luscle and decreasing symptoms. The advantage of dry needling techniques over the myofascial techniques is the ability to establish a painless full range of motion and increased strength at the time of treatment.