(RacingWire) - Mike Conway will be out for at least three months after breaking his back in a horrific accident during the closing laps of yesterday's Indanapolis 500. 

Ryan Hunter-Reay who was also involved in the accident underwent thumb surgery but will likely be able to race this weekend in Texas.

The following is the statement released by the Indy Racing League regarding both drivers' condidtion.

Indy Racing League Director of Medical Services Dr. Michael Olinger gave the following update regarding IZOD IndyCar Series drivers Mike Conway and Ryan Hunter-Reay:

Mike Conway had surgery Sunday night to repair fractures to his lower left leg. He also has a soft tissue injury to his lower left leg and is anticipated to have another surgical procedure later this week. Additionally, Conway has a compression fracture of one of his thoracic vertebrae and is being fitted for a back brace, which he will wear for three months and will prevent him from racing.

Ryan Hunter-Reay is scheduled to have surgery today on his left thumb.  After surgery, he will be fitted with a carbon fiber splint, which should allow him to participate at Texas Motor Speedway this weekend.