Lordosis is the inward curve of the lumbar spine (just above the buttocks). A small degree of lordosis is normal. Too much curving is called swayback.| medlineplus.gov
Kyphosis is a curving of the spine that causes a bowing or rounding of the back. This leads to a hunchback or slouching posture.| medlineplus.gov
Compression fractures of the back are broken vertebrae. Vertebrae are the bones of the spine.| medlineplus.gov
Spinal fusion is surgery to permanently join together two or more bones in the spine so there is no movement between them. These bones are called vertebrae.| medlineplus.gov
You were in the hospital for spine surgery. You probably had a problem with one or more disks or spine bones. A disk is a cushion that separates the bones in your spine (vertebrae).| medlineplus.gov
Spondylolisthesis is a condition in which a bone (vertebra) in the spine moves forward, out of its proper position, in relation to the bone below it.| medlineplus.gov
A herniated or slipped disc means that one of the soft cushions or discs between your vertebrae or spinal bones pushes out. Find out about it here.| medlineplus.gov