Spinal stenosis occurs when the area inside the spinal canal narrows, a problem that results in compressed nerves. Though you can develop spinal stenosis after an injury, the cause is often a degenerative condition such as:

  • Herniated discs
  • Osteoarthritis
  • Bone spurs
  • Thickened ligaments
  • Degenerative disc disease
  • Slipped vertebra (degenerative spondylolisthesis)

These conditions either protrude into the spinal canal or, in the case of a slipped disc, pull the spinal column out of alignment. In all cases, the condition pushes against the nerves, causing inflammation and pain.