1. Degenerative Disc Disease
Degenerative disc disease is not really a disease but a term used to describe the normal changes in your spinal discs as you age. As we age, our spinal disc...
http://headtotoe.apta.org/topic/special/uh2039spec/sec1.htm

2. Lumbar Disc Disease on eMedicineHealth.com
Lumbar disc disease is caused by normal degenerative changes that occur as a person ages. The final process in lumbar disc disease occurs when the degenerat...
http://www.emedicinehealth.com/lumbar_disc_disease/page2_em.htm

3. Symptomatic Degenerative Disc Disease
found within the Condition / Disease = "Symptomatic Degenerative Disc Disease" Porous Coated Motion Artificial Disc for Stabilization of the Cervical Spine.
http://clinicaltrials.mayo.edu/clinicalTrialSubTheme.cfm?subtheme=Symptomatic%2...