Piriformis Muscle Block

Piriformis Muscle Block

Injections are into the muscle attached to the side of the flat bone at the base of the spine just above the tailbone.

Tightness in this muscle can cause sciatica, which is pain down the back of the leg. There may also be pain symptoms in the hip or lower back, and possibly in the groin, genitals and rectum.

During the Procedure

The patient lies on his/her side on an x-ray table while numbing medication and then steroids are injected into the muscle using fluoroscopic guidance for precise delivery. The procedure takes about 15 minutes, with usually 30 minutes recovery. Discomfort during the procedure should be minimal. It’s not uncommon to experience some numbness in the leg after the procedure, and the staff will make certain that the patient can walk safely before leaving.

If a patient desires further sedation, that is certainly available. Usually this isn’t necessary and sedation does increase recovery time. Regardless of whether sedation is used, Dr. Dumitru requires that the patient be driven home by a second party.

Patients are advised to take it easy and not return to work or other taxing activities until the next day.

Typical Outcomes

Patients are advised to be aware that after the injection, pain may seem to be gone; this is due to the anesthetic and will only last for a few hours. Unfortunately, the original pain will likely return in addition to some soreness at the injection site. The good news is that in three to seven days, longer-term pain relief is possible.

Degrees of response vary. The combination of heat prior to exercise, ice after exercise and stretching exercises will assist in a patient’s recovery. Follow-up injections may be needed.