Ankylosing spondylitis is an inflammatory disease that, over time, can cause some of the small bones in your spine (vertebrae) to fuse. This fusing makes the spine less flexible and can result in a hunched-forward posture. If ribs are affected, it can be difficult to breathe deeply.

Lumbar spondylosis can be described as all degenerative conditions affecting the discs, vertebral bodies, and associated joints of the lumbar vertebrae. Spondylosis is not a clinical diagnosis but instead a descriptive term utilized to designate spinal problems. Within the literature, lumbar spondylosis encompasses numerous associated pathologies including spinal stenosis, degenerative spondylolisthesis, osteoarthritis and many others

Sciatica refers to the pain that radiates along the path of the sciatic nerve which branches from your lower back through your hips and buttocks and down each leg. Typically sciatica affects only one side of the body.