Tumor Occupancy Ratio-An Imaging Characteristic Prognosticating the Surgical Outcome of Benign Intradural Extramedullary Spinal Cord Tumors

Bar diagram showing the relationship between tumor occupancy ratio and preoperative gait disability score.

Linear correlation between tumor occupancy ratio and gait disability score.

Correlation between preoperative and postoperative gait disability score at a different tumor occupancy ratio.

Changes in gait disability score in preoperative period and in follow-up at 12 months (significant is a >2 change in score).