Re:fibula spiral fracture at ankle: additionally, i have had no pain since break, and walking lightly since cast was put on, question is about a boot?

Talk to your Dr: It is best to talk to your doctor since they know the exact injury and stability of the fracture.

Cast now boot later: Is this being treated without surgery (ie a nondisplaced break)? Anyhow, if so usually is 6 weeks immobilized and non weightbearing to allow for healing and minimize the risk of displacement. I tend to not use the boot until after this initial 6 week period. For a very hairline type break i might allow a boot as long as i can trust the patient to keep it on near full time.