1 Your spine may become unstable if there's abnormal or excessive motion between two vertebrae. This is a common side effect of severe arthritis in the spine. Spinal fusion can be used to restore spinal stability in such cases.  Spondylolisthesis.
http://www.mayoclinic.org/tests-procedures/spinal-fusion/details/why-its-done/icc-20155749
A fusion is a surgical procedure that joins two or more bones (in this case vertebrae) together into one solid bone. The procedure is called a posterior fusion because the surgeon works on the back, or posterior, of the spine. 1  what surgeons hope to achieve.  what happens during the procedure.
http://www.houstonmethodist.org/orthopedics/where-does-it-hurt/lower-back/posterior-lumbar-fusion
1 Deformities of the spine. Spinal fusion can help correct spinal deformities, such as a sideways curvature of the spine (scoliosis) or abnormal rounding of the upper spine (kyphosis).  Spinal weakness or instability. Your spine may become unstable if there's abnormal or excessive motion between two vertebrae.
http://www.mayoclinic.org/tests-procedures/spinal-fusion/details/why-its-done/icc-20155749
Spine surgery - discharge. You were in the hospital for spine surgery. You probably had a problem with one or more disk, a cushion that separates the bones in your spine (vertebrae). You may have had one of these surgeries: Diskectomy -- surgery to remove all or part of your disk.
https://medlineplus.gov/ency/patientinstructions/000313.htm
1 This is a common side effect of severe arthritis in the spine. Spinal fusion can be used to restore spinal stability in such cases.  Spondylolisthesis. In this spinal disorder, one vertebra slips forward and onto the vertebra below it.
http://www.mayoclinic.org/tests-procedures/spinal-fusion/details/why-its-done/icc-20155749
1 Laminectomy -- surgery to remove the lamina, two small bones that make up a vertebra, or bone spurs in your back, to take pressure off your spinal nerves or spinal column.  Spinal fusion -- the fusing of two bones together in your back to correct problems in your spine.
https://medlineplus.gov/ency/patientinstructions/000313.htm
A fusion is a surgical procedure that joins two or more bones (in this case vertebrae) together into one solid bone. The procedure is called a posterior fusion because the surgeon works on the back, or posterior, of the spine. what surgeons hope to achieve.
http://www.houstonmethodist.org/orthopedics/where-does-it-hurt/lower-back/posterior-lumbar-fusion
If you had spinal fusion, you will probably be off work for 4 to 6 weeks if you are young and healthy and your job is not very strenuous. It may take 4 to 6 months for older people with more extensive surgery to get back to work. Length of recovery also depends on how bad your condition was before surgery.
https://medlineplus.gov/ency/patientinstructions/000313.htm
A fusion is a surgical procedure that joins two or more bones (in this case vertebrae) together into one solid bone. The procedure is called a posterior fusion because the surgeon works on the back, or posterior, of the spine. Posterior fusion procedures in the lumbar spine are used to treat spine instability, severe degenerative disc disease, and fractures in the lumbar spine. what surgeons hope to achieve.
http://www.houstonmethodist.org/orthopedics/where-does-it-hurt/lower-back/posterior-lumbar-fusion
1 But if a broken vertebra makes your spinal column unstable, spinal fusion surgery may be necessary.  Deformities of the spine. Spinal fusion can help correct spinal deformities, such as a sideways curvature of the spine (scoliosis) or abnormal rounding of the upper spine (kyphosis).
http://www.mayoclinic.org/tests-procedures/spinal-fusion/details/why-its-done/icc-20155749
what is a complete spinal fusion
The fusing of two bones together in your back to correct problems in your spine is called a complete spinal fusion. A complete spinal fusion is the fusing of two bones together in your back to correct problems in your spine.