Had orif surgery to stabilize fibula 2 mos ago and am transitioning to a walking boot and 1 hr/day on recumbent bike, is swelling normal?

Yes: The early treatment is focused on the fracture, the long term treatment focuses on soft tissue healing. When bones fracture they release a tremendous amount of energy into the soft tissues. We often don't focus on this part of the injury because you can't see it on x-rays but it affects the healing process long after the fracture has healed. Some patients experience some swelling for a year.

Swelling: Swelling with an ankle break or surgery can last 6-12 months. The swelling may or may not go away entirely.