Remove Orthopedic cast with segmentation

Hi everyone,
After I try to remove the orthopedic cast from the CT image, I get the image that I attached. Untitled2222|598x455
How can I fill the holes in the image to get the correct image without all these holes?

You can use the ‘smooth’ in segment module

Thank you! it’s work.

You can also use SurfaceWrapSolidify extension if you need to fill larger holes.

Thank you, Andras!
I try to fix this problem without changing the bones (to keep realistic)