Factors Predicting Hospital Stay, Operative Time, Blood Loss, and Transfusion in Patients Undergoing Revision Posterior Lumbar Spine Decompression, Fusion, and Segmental Instrumentation

Number of levels fused and age seem to be the most significant factors predicting hospital stay, operative time, intraoperative blood loss, and transfusion in patients undergoing revision posterior lumbar spine decompression, fusion, and segmental instrumentation.