ALLENTOWN, Pa. — IndyCar driver Robert Wickens had titanium rods and screws placed in his spine to stabilize a fracture associated with a spinal cord injury suffered in a crash at Pocono Raceway.

IndyCar said in a statement Tuesday the severity of the spinal cord injury was unknown.

Wickens is expected to undergo more surgeries to treat fractures in his lower extremities and right forearm. He remains in stable condition.

His car sailed into the fence at Pocono when he and Ryan Hunter-Reay made slight contact. Hunter-Reay’s car spun and Wickens’ car launched over it and into the fence. A large hole was torn into the fence. The race was delayed 2 hours to repair the damage.