The spine is made up of bones called vertebrae separated by small discs to provide a cushion. The discs consist of a tough outer layer (annulus) and a soft inner layer (nucleus).
Kyphosis is an exaggerated, forward rounding of the upper back. This condition can result from developmental problems, degenerative conditions, or trauma. It also can occur as the result of compensations for other conditions or cause further complications to the neck, low back, or shoulders.
Lumbago describes low back pain or discomfort. The pain can be described as acute, lasting from a few days to a few weeks, or chronic, lasting for months or longer.
Sacroiliitis is an inflammation of one or both of the sacroiliac joints, which connect the pelvis to the sacrum. The sacrum and the iliac bones are held together by a collection of strong ligaments allowing relatively little motion at the sacroiliac joints. With sacroiliitis, even slight movements can cause discomfort or pain.