How long does it take for an orthopedic to perform surgery on a tibia fibula fracture and ankle fracture?

No average: Surgeons work at different paces and have different techniques. Cant really say how long.

Fracture: Each fracture has its own personality: sometimes 30, 60 minutes or longer, especially if multiple pieces, displaced, intraarticular.

Aprox. 1-2 hours: A bimalleolar fracture (as described) can take as little as 1 hour to fix. If there are multiple pieces (comminution) it can take longer. These fractures may require the placement of a syndesmotic screw to pull the tib/fib together adding time to the procedure . Most importantly it is not the time of the surgery that is important (unless there are medical problems) but the quality of the reduction.

Unknown: There r so many variants from simple 2 very complex fractures. Every such fracture can b very easy 2 very difficult, with many fragments including ligaments, some r open, meaning the fx is exposed through the skin 2 some with fragments left on the road from accidents. An answer can b given 2 some degree if the configuration ; location, ; contaminated or not.