Back to top Spinal Stenosis Narrowing of the width of the canal causing pressure on the nerve held within it. Back to top Spondylitis Inflammation of any of the spinal vertebrae. Spondylolisthesis A condition where one vertebra slips out of alignment with another. Most common is the 4 th over the 5 th lumbar vertebra or the 5 th over the sacrum. The causes can be congenital or due to structural defects, degenerative changes and injury.
Some people have it without symptoms, but others have major pain and nerve-related symptoms.
Called retrolisthesis if the slippage is backwards. Spondylolysis A crack in the neural arch of the vertebra that can predispose to a Spondylolisthesis. This can be congenital, caused by over-use or found in people with a history of falls. Back to top Spondylosis A condition of the spine where the discs have narrowed and osteophytes have formed at the junction of the disc and vertebra. This can lead to stiffness and eventually fixation of the joint.