“…Low back pain and neck pain are caused by different number of etiologies (degenerative, trauma, tumors, infections, deformities or muscle sprains). Patients with low back pain (LBP) due to degenerative disc disease (DDD) have traditionally been treated by spinal fusion [ 1 , 2 ]. However, Total Disc Replacement (TDR) has emerged as an alternative surgical option and has gained an increasing reputation over the past three decades since it was first described in 1984 [ [1] , [2] , [8] ].…”