Endovascular Embolization is a procedure where doctors block blood flow in a vessel to treat or prevent problems. In this study, doctors want to see if this technique helps with Chronic Subdural Hematomas (SDHs), which are blood clots on the brain's surface. These clots often happen in older people and can come back after surgery. Traditional treatment involves surgery to remove the clots. The new method, endovascular embolization, could reduce the chance of these clots returning.

Participants in the study will either have surgery alone or surgery followed by the endovascular embolization. The goal is to find out if the new method is better at preventing the clots from coming back.

• The study includes adults aged 18-90.
• Participants will be randomly assigned to one of two groups: surgery only or surgery plus embolization.
• This study is important for reducing hospital stays and additional surgeries.