Sciatica, often thought to be caused by a pinched nerve, is more often caused by a trigger point in the piriformis muscle.
In fact, pain in the lower back, buttocks, hips or pain that shoots down the leg, often is a result of tightness in two major muscles in the buttocks.
Anyone who sits for extended periods is susceptible to pain from trigger point #4 — cab or truck drivers, gamers, and people who work at computers. A qualified massage therapist can greatly relieve the pain from sciatica by addressing trigger point #4.