Marc Marquez has been ruled out of next weekend's Argentina Grand Prix after undergoing surgery on his hand.

The six-time MotoGP champion suffered a fracture to the first metacarpal bone in his right hand in Sunday's Portuguese Grand Prix.

Repsol Honda confirmed on Monday that Marquez was operated on at the Ruber Internacional Hospital in Madrid and will spend a short period recuperating.

As a result of sitting out the next round in Argentina, the Spaniard will also miss the double long-lap penalty imposed on him by the FIM 

Marquez was found guilty of irresponsible riding in Portimao when ploughing into Miguel Oliveira at Turn 3 early in the race, resulting in both riders dramatically crashing out.

The 30-year-old also forced Jorge Martin wide, which saw his compatriot lose several positions.

Speaking after the race, which he entered in pole position, Marquez accepted blame for the collision that cut his opening race of the season short.

"The most important is that Miguel is okay," he said. "I made a big mistake on Turn 3, in the first part, and this created everything.

"I braked and had a massive lock with the front tyre. That meant that I released the brakes. My intention was to go to the left side. 

"But the bike stayed on a lean and I couldn't avoid going to the right side. I was able to avoid Martin but couldn't avoid Miguel. I was very worried because the contact was big.

"I already said it personally – but I want to say sorry to him, to his team, to the Portuguese fans. 

"I have been penalised for that mistake with a double long lap penalty, that I completely, completely agree."

Following his stunning pole position and race win double in Argentina this weekend, Aleix Espargaro believes this year's Aprilia is the "best bike" he has had in his career.

The Spaniard took Aprilia's first ever MotoGP era pole on Saturday at Termas, going five thousandths of a second within Marc Marquez's all-time lap record set in 2014.

He backed it up by winning on Sunday and fighting his way past Pramac Ducati's Jorge Martin, who took the lead after the first corner.

After claiming his first win in over 200 MotoGP races as well as the fastest lap at Termas, the 32-year-old was on cloud nine.

"I'm extremely happy because since Qatar I felt, even in the pre-season, I felt like I had the best bike I've ever had in my career," Espargaro said.

"Also, in Qatar I felt strong and we have step-by-step shown a lot of potential. Yesterday we proved we were the fastest, and also today in the race it was not lucky or a wet race and now we are leading."