After qualifying on pole, the Frenchman comfortably led the race at Jerez when his pace suddenly slowed down halfway.
After Quartararo had lost the lead to Ducati’s Jack Miller, who later won, he dropped out of the points and dropped back to 13th place at the finish.
Quartararo, who led the championship ahead of the weekend in Jerez after winning the last two races in Qatar and Portugal, had undergone arm pump surgery back in 2019 but said Sunday was the first time he has been to the Spanish circuit it was affected where he won twice in 2020.
When asked after the race how he would deal with the problem, Quartararo admitted that he felt “lost”.
“I have no idea, I can’t answer that question because my brain isn’t working right now,” he said.
“I think too much so I prefer not … I have people who are already looking, my manager, my best friend, trying to find the best options.
“I have no idea, I’m sure something is planned because it’s not okay, my arm is not okay. In Portugal it was a disaster last year, this year was perfect. Here [at Jerez] I’ve never had a problem in my life, this year I have a problem.
Fabio Quartararo, Yamaha Factory Racing
Photo by: Gold and Goose / Motorsport Images
“I don’t understand. We’re still looking, but there are too many options.
“My brain is full of people telling me to go to one place, to the other. And right now, I’m lost.”
On Tuesday Quartararo had a successful operation for chronic stress compartment syndrome in the CH Aix en Provence hospital.
Yamaha said he is expected to be fully fit for the next MotoGP race, his home race at Le Mans on May 16.
Quartararo wrote on Twitter: “Everything is okay, only one goal is the next race at home.”
Despite the disappointing result in Jerez, Quartararo is only two points behind the new championship leader, Ducati rider Francesco Bagnaia.