Piriformis muscle injection is the treatment for back and leg pain caused by trauma to the pelvic or buttock, hypertrophy of the piriformis muscle, anatomic abnormalities of the piriformis muscle or sciatic nerve, differences of leg length, or piriformis myositis. This procedure involves the injection of local anaesthetic and either steroid or botox in the piriformis muscle using electromyography, CT guidance , or fluoroscopic guidance to guide the doctor with the correct needle placement in the identification of the affected area. Botox is used for stopping the spasming of the muscle for up to 3 months. Steroid on the other hand, reduces inflammation, swelling, and irritation around the piriformis muscle.
Patient will be taken to the recovery and be discharged approximately an hour after the treatment.
Botox usually takes 5 days to start working. During the first 5 days, the patient may experience some flu-like symptoms. With possible side effects like headache, irritation of nerves at the site of the area injected, and rarely paralysis outside the area of the spasm. While steroid approximately takes 48 hours to start working with a possibility of discomfort or pain.
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