
“Noah has undergone several surgeries in the last few hours, which went well,” read a statement on X.
“According to the doctors in charge, his condition is stable but still critical,” it stated.
The Moto3 race at Sepang yesterday was delayed and shortened after the collision involving newly-crowned world champion Jose Antonio Rueda and 20-year-old Dettwiler during the sighting lap.
Both riders, who were conscious following the incident, were airlifted to hospital.
Rueda, a 19-year-old Spaniard, suffered a suspected hand fracture.
Moto3 is the “lightweight” or entry class in the world championship, behind Moto2 and MotoGP, which is regarded as the pinnacle of the sport.