Trigger point injections
This procedure involves using a thin needle to break up small contractures in local muscles called trigger points. These trigger points can cause pain in the pelvic region and contract around the pudendal nerve, essentially strangling it, causing the nerve to become painful. This modality is rarely as effective as a nerve block.
When Is Trigger Point Injection Used?
TPI is used to treat many muscle groups, especially those in the arms, legs, lower back, and neck. In addition, TPI can be used to treat fibromyalgia and tension headaches. The technique is also used to alleviate myofascial pain syndrome (chronic pain involving tissue that surrounds muscle) that does not respond to other treatments. However, the effectiveness of TPI for treating myofascial pain is still under study.
Conditions Treated with Trigger Point Injections
Conditions involving widespread pain complaints, such as fibromyalgia or endocrine disorder, are not suitable for injections. Treatment is indicated for endocrine diagnoses or fibromyalgia before trigger point injections are considered. In addition, the finding of tenderness alone is not an indication for trigger point injection, because patients with fibromyalgia may also have myofascial pain trigger points.