Fig. 1From: Outcome of single burr hole under local anesthesia in the management of chronic subdural hematomaDistribution of the patients according to Markwalder grade in preoperative, early, and late postoperative evaluations. The figure shows the relation between the Markwalder scale and the number of cases in each category. We can observe the marked improvement in Markwalder scale in both early and late postoperative follow-upBack to article page