Sciatica is pain in the lower extremity resulting from irritation of the sciatic nerve. The pain of sciatica is typically felt from the low back (lumbar area) to behind the thigh and radiating down below the knee & may reach the foot .
include irritation of the nerve from adjacent bone, tumors, muscle, internal bleeding, infections, injury, and other causes. Sometimes sciatica can occur because of irritation of the sciatic nerve during pregnancy.
2- Surgery Some patients with sciatica may find significant relief from surgery. In cases of herniated discs, a surgical procedure called a laminectomy may be performed. In this procedure, a portion of the posterior arch is removed to relieve pressure on pinched nerve tissues.
In cases of spinal stenosis, the portion of bone that is putting pressure on the sciatic nerve system can be removed.
Sciatica: Studies of symptoms, genetic factors, and treatment with periradicular infiltration Chapter 2. Review of the literature .
^ "sciatica" at Dorland's Medical Dictionary .
Oliphant, D (2004). "Safety of Spinal Manipulation in the Treatment of Lumbar Disk Herniations: A Systematic Review and Risk Assessment". Journal of manipulative and physiological therapeutics .