Sciatica is pain that radiates along the sciatic nerve, running from the lower back through the hip and buttock and down one leg, caused by irritation or compression of the nerve.
Kyphosis is a musculoskeletal condition in which the upper spine curves forward beyond the normal range, creating a rounded or hunched appearance in the upper back.
Adjacent segment stress is the added movement demand placed on the spinal segments directly above and below a fusion, since the fused level itself can no longer move, that movement has to happen somewhere.
