MotoGP returnee Hiroshi Aoyama has fractured his left wrist in a training accident.
MotoGP.com states that the new Avintia Blusens CRT rider was involved in a motocross accident - his hand becoming trapped in the rear wheel - last Friday near Barcelona, Aoyama's European home.
However, whilst checks at the nearby USP Dexeus University Institute confirmed 'a small fracture', it appears that surgery is not scheduled and Aoyama still aims to ride in the opening MotoGP test of 2013 at Sepang from February 5-7.
Aoyama won the final 250cc grand prix title in 2009, then moved to the MotoGP class with Interwetten Honda. After an injury-interrupted debut season in the premier-class, the Japanese switched to Gresini Honda for 2011, where he scored a MotoGP best of fourth at the damp Jerez race.
Aoyama then made an unsuccessful move to World Superbikes for 2012, where he managed just 18th in the standings with Ten Kate Honda.
Hector Barbera will ride alongside Aoyama on the Avintia FTR-Kawasakis this year.