Alstare Suzuki's Carlos Checa has been ruled out of the remainder of this year's World Superbike season after being diagnosed with a fractured pelvis.

At the Istanbul round, Checa was the victim of a bad crash during Friday’s first free practice session. The Clinica Mobile medical team, on hand to treat the rider at the track, reported a contusion to the thorax and a suspected fracture of the left scaphoid. As a result the Spanish rider was unable to continue with the weekend’s qualifying sessions. A further examination by Dr Xavier Mir in Spain revealed the break.

"Carlos was having difficulty walking and so Doctor Mir, who is attending to Carlos at this difficult time, therefore carried out further tests that have revealed a fracture of the pelvis, at the point where it joins with the femoral head," said a team spokesman.

"Surgery is scheduled for Wednesday 18th September and will be performed by Doctor Ribas of the Dexeus clinic. The long period of recuperation required post-surgery unfortunately means that Checa will be unable to participate in the final three round of the 2013 season."