Lumbar spinal fusion is a surgical procedure that is sometimes effective in relieving pain and stabilizing the spine but results, almost as a rule, in some loss of flexibility of that segment. The surgical procedure will ultimately inhibit movement due to the permanent fusion of two or more vertebrae; that is, the natural movement in that area is lost. Difficulty in bending, twisting, or rotating at the fused level is manifested as stiffness in the lower back. Henceforth, the degree of loss of flexibility is said to vary, depending on factors such as the number of levels fused, the mobility of the patient pre-operatively, and, finally, post-operatively, how much effort the patient put into rehabilitation. Visit - Lumbar Spinal Fusion NJ