Preoperative Symptom Duration and the Effect on Clinical Outcomes and PROMIS-PF in Patients Undergoing Lumbar Fusion Surgery.

Patients undergoing lumbar fusion with greater than 2 years of symptoms prior to surgery have a smaller increase in PROMIS-PF and are less likely to achieve MCID on PROMIS-PF. Further study is needed in order to determine the optimal timing for lumbar fusion surgery following symptom onset.