There are several surgical procedures that can be performed to treat spinal stenosis, those surgeries include:
A foraminotomy is performed if a patient is experiencing discomfort as a result of pressure on a nerve as it exits the vertebra, through a foramen. The foramen is made larger to relieve pressure on the affected nerve.
A laminotomy is performed to make a larger opening in the lamina, a plate which protects the spinal canal as well as the spinal cord. The larger opening relives spinal and/or nerve pressure.
A laminectomy is performed when a laminotomy is insufficient. In a laminectomy all or part of the lamina is removed.