The severity of the 20-time Tourist Trophy winner’s injury is unknown although the wrist bone fracture is rather common in the sports world.
It is believed the injury occurred when John was on an off-road training session – one of his favourite ways to stay fit during the winter months.
John’s return to fitness in time for the start of the TT season will depend on the severity of the injury and if he does require surgery, he could be facing a race against time to be fit for the start of the championship season on 26th-27th April.
With only five weeks left for recovery, he may not be at his best in the early stages of the 2014 Endurance World series.
The Isle of Man TT is also around the corner, with the crazy Manx action to take place 24th May – 6th June.
Other racers to have suffered broken scaphoids in recent times include Nicky Hayden, Bradley Smith and Jonathan Rea.