<qa>  What is the name of the subjects that will be included in the study?The subjects Number of subjects A total of 150 patients will be included in the study. Inclusion criteria All consecutive patients with chronic subdural hematoma with indication for surgical intervention: clinical symptoms as a result of the subdural collection, or important mass effect as indicated by a midline shift of more than 5mm Exclusion criteria Patients under the age of 18 will be excluded Patients who have undergone previous cranial surgery which would limit surgical options for example bone flap already in place Replacement of subjects Dropout, in the case of this trial, would only signify loss to follow-up since patients will be operated on after consenting to participation in the trial. In case of dropout, the available data will be evaluated and included in the analysis when possible. If dropout occurs after the scheduled six weeks postoperative visit, data is still usable for analysis of primary endpoint. Data from earlier on in treatment for example duration of surgery, hospital stay, etc will be usable for analysis of secondary endpoints. 