This is source I found from another site, main source you can find in last paragraphGregory Shamus/Getty Images
The initial X-rays revealed a fractured left tibia, according to Joe Gabriele of Cavs.com, who added Bogut is heading to the hospital for further evaluation.
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The center officially registered one minute of action against the Miami Heat and finished with zero points and two fouls.
Bogut has been all over the place in the past 12 months, beginning with the Golden State Warriors trading him to the Dallas Mavericks last July. The Mavericks then shipped him to the Philadelphia 76ers shortly before the trade deadline, but the Sixers quickly waived him so he could join a playoff contender.
While Sam Amico of Fox Sports Ohio reported the center had considered joining the Boston Celtics, former Cleveland guard (and fellow Australian) Matthew Dellavedova pushed him to the Cavs. He was expected to provide some much-needed depth and valuable post defense for the defending champions.
Unfortunately, this latest injury raises questions for a player who has dealt with a number of injuries in the past.
Bogut suffered a right knee bone bruise Dec. 5 and missed 11 games during the Mavs' uninspiring start to the season. He was also hampered by a right hamstring strain during portions of his time in Dallas.
On the year, Bogut is averaging a career-low 3.0 points to go with 8.3 rebounds per game.
If the diagnosis of a fractured left tibia holds true, this would be the fourth season of Bogut's career in which he plays fewer than 40 games.
This is source I found from another site, main source you can find in last paragraph
Source : http://bleacherreport.com/articles/2681030-andrew-bogut-sufferers-left-leg-injury-in-cavaliers-debut-vs-heat