Karter Sena injured, not Bruno Senna

Bruno Senna has calmed a wave of fears about his health by declaring "I’m fine".

Rumours buzzed around the internet that the Williams driver had been injured less than a month before the 2012 season.

In fact, the injured driver is Japanese karter Sakaguchi Sena.

"Guys, I’m fine," Senna wrote on Twitter. "There’s been a confusion about me hurting myself.

"Whoever it is that actually got hurt, I wish him a speedy recovery."