NASCAR Sprint Cup driver and team co-owner Tony Stewart had a third surgery on his broken right leg Monday, Stewart-Haas Racing announced.
The procedure was considered a "proactive measure" to examine and close a wound on his shin. Stewart is still recovering from a fractured tibia and fibula that he sustained during a sprint car crash in Iowa on Aug. 5.
Stewart will remain in a hospital for observation, SHR said in a statement.
Previous operations stabilized Stewart's leg with a metal rod. He began rehabbing the injury two weeks ago.
Stewart is expected to return by next season's Daytona 500.