Lahey Hospital & Medical Center has recently been designated a Blue Cross and Blue Shield (BCBS) Center of Distinction for Spine Surgery by BCBS of Massachusetts. All of our spinal fusion patients' outcomes are measured and placed in our registry. Pictured below is a graph of single and two level fusion outcomes as measured by the Oswestry Disability Index (ODI). A lower score is better. A post-operative score that is less than 20 or 10 points lower than the pre-operative score is considered to be associated with significant improvement or reduction in pain.