Iannone dislocated his shoulder after crashing during an in-season test prior to the French GP earlier this month
Speaking ahead of this weekend's Italian GP, Iannone revealed that following further checks it had been determined that he also suffered a fracture to the tip of the humerus in his left arm. Despite this, the 25-year-old has no intention of confining himself to the sidelines.
"On Sunday I will race at Mugello but it's going to be difficult for me to be 100 per cent fit," he said.
"A couple of days ago I stopped taking painkillers and yesterday I did an MRI scan.
"Unfortunately they found a hairline fracture at the tip of my funny bone, and to be sincere that was a bit of a nasty surprise.
"The swelling still causes me a lot of pain and I am continuing to do laser therapy in an attempt to get it to go down as soon as possible.
"In any case, I'll have to grit my teeth like I did at Le Mans, because it's far too important for me and for Ducati to have a good race in front of the Mugello fans."
Iannone has enjoyed a solid yet unspectacular start to the 2015 campaign and sits in fifth place in the World Championship standings.