Bucks general manager John Hammond said Thursday that the team physician performed an MRI on Bogut and the results showed a strain in his lower left leg as well as a contusion.
Bogut stayed in the game for several minutes after he was kicked, but the pain grew worse and an MRI taken Thursday revealed that he had strained a ligament on the outside of his left calf to go along with a bruise.
"It's very disappointing. I don't want to be hurt," said Bogut, who is averaging 16.1 points and 9.2 rebounds since missing more than half of last season with a stress fracture in his lower back. "It wasn't like I stepped wrong, or I did it running. I got hit."
The fifth-year center scored 21 points and left Wednesday's game late in the fourth quarter and did not return.
"I had shooting pain all the way down my leg. I knew it was bad," the 24-year-old Bogut said. "I was hurting after the game, I could barely walk to my car and could barely walk after the game. I thought maybe I'd wake up and feel better, but I woke up and felt worse."