Sciatica is a condition that occurs with entrapment of the sciatic nerve or nerve roots that form the sciatic nerve. This condition can occur with a narrowing of the joint space were the nerve roots leave the spine. There a several reasons that this may occur, one of the most common being a herniated/bulging disc in the spine. The herniated disc will put pressure on the nerve and cause pain.

Common Sciatica symptoms include numbness or tingling in the buttock/leg, trouble walking, balance difficulties, and strength changes in the lower extremity.