I have undergone crif on my left ankle. it's been 4 weeks now. when i can start trying to walk normally? currently i am wearing cast.

Ask the Surgeon.: This would be entirely up to the doctor that reduced the fracture. Not knowing all the details of the injury, I can only guess. Probably something like another 4 weeks, 4days, 4 hours and 24 minutes. Don't hold me to this figure.

Verify healing: You need to verify healing of fracture and then you can ambulatory per your doctor's instructions.