The piriformis can also spasm due to muscular weakness. Muscles LOVE to compensate for other muscles that aren't executing their position. This happens quite a bit Using the piriformis. Sciatica — The sciatic nerves operate within the lower back, in the buttocks and down the back on the legs. Sciatica https://how-to-fix-lower-back-and35567.activablog.com/33321915/how-to-fix-lower-back-and-glute-pain-fundamentals-explained