Tony Stewart underwent a third leg surgery on Monday "to examine and close a wound on his shin" from his August sprint car accident according to his team.
The Stewart-Haas Racing release said that Stewart will remain in the hospital for observation.
"The surgery served as a proactive measure and team officials do not expect it to impact Stewart’s return to the No. 14 Bass Pro Shops/Mobil 1 Chevrolet in 2014," the team's statement said.
Stewart suffered a fracture of his right tibia and fibula on August 5 at Oskaloosa Speedway in Iowa. Immediately after the crash he had surgery to clean the fracture and on August 8 a second surgery was performed to put a metal rod in Stewart's leg and put the tibia in its anatomical position.
Mark Martin, Austin Dillon and Max Papis have replaced Stewart this season and the three-time Cup champ said his recovery timetable is on track for the 2014 Daytona 500.