Crawford CH, et al. - Researchers identified the prognostic factors that predict a “best outcome”, defined as postoperative Oswestry Disability Index (ODI) ≤ 20 and pain Numeric Rating Scales (NRS) ≤ 2 following fusion for lumbar degenerative conditions. Results demonstrated a greater likeliness of achieving a minimal symptom state, defined here as a post-operative ODI ≤ 20 and pain NRS ≤ 2, following fusion for lumbar degenerative condition in an older patient with a lower baseline ODI undergoing a single level lumbar fusion for spondylolisthesis.