Former MotoGP king Marc Marquez has undergone a bone graft on his humerus as part of a third operation to fix the damage caused by the crash at Jerez.

The Repsol Honda man had the existing metal plate removed at a Madrid Hospital - not the usual Dexeus in Barcelona - and a new one bolted in during an eight-hour operation.

A team statement reads:

Marc Marquez has undergone a new operation on his right arm as a result of the slow healing of the humerus bone, which has not improved with specific shock wave treatment.

Today the rider has undergone surgery at the Hospital Ruber Internacional, in Madrid, for a pseudarthrosis of the right humerus.

The surgery, carried out by a team made up of doctors Samuel Antuña, Ignacio Roger de Oña, Juan de Miguel, Aitor Ibarzabal and Andrea Garcia Villanueva, consisted of the removal of the previous plate and the placement of a new plate with the addition of an iliac crest bone graft with a corticoperiosteal free flap.

The surgical procedure lasted for eight hours and was uneventful.