How long do you wait following spinal surgery to administer SRS?

The answer depends. If separation surgery was performed, I would start sooner than later and be aware of skin dose and minimize as much as possible. Superficial dehiscence shouldn’t become problematic after SRS given minimal skin dose (if planned accordingly). If a large amount of tumor was resected...

Without wound complications, 3 weeks would be sufficient. I would still avoid irradiating the midline incision area.

With superficial dehiscence, I would postpone a week and check with the surgeon. If the wound is healing and the treatment plan avoids the incision area, you could proceed.