Jorge Lorenzo underwent an operation on his right hand on Thursday, after a motocross training accident near Montmeló.

The 22 year-old Spanish rider, who was runner-up in the 2009 MotoGP World Championship, fell in a slow corner when doing approximately 30 km/h and hurt his right hand as he landed.

Lorenzo was immediately taken to the Capio Hospital General de Catalunya where it was discovered he had a fracture at the base of the first metacarpal and a displaced thumb. Doctor Augusto J. Casanovas made an open reduction and osteosynthesis with a small titanium plate, and Lorenzo will require hand protection for four to six weeks.

The Fiat Yamaha rider left the hospital on Friday morning and returned to his home to begin his recuperation. He will not participate in the Sepang test, which is scheduled for February 25-26, but is expected to make a full recovery in time for the final pre-season test in Qatar, which is due to take place from March 18-19