ArnoldTweetsChristopher230.jpgArnold Schwarzenegger hasn't Tweeted in more than a month, but he took to the Twitter-sphere Monday to update the public on his son Christopher's health.

Said the governator:

    "Thanks for all your support for Christopher. It means a lot to me & to him. He's doing much better & we'll have him back at full speed soon."


Arnold and his son, Patrick, visited Christopher over the weekend (left). Christopher, 13, suffered a collapsed lung after a boogie boarding accident.

Sources tell X17 that Chris was up and walking around the hospital with Arnold over the weekend.

Despite the fact that Arnold and Maria have both just submitted their divorce filings, they've put on a united front for Christopher, who is expected to make a full recovery.

Patrick also took to Twitter to show support for his bro -- see the super-cute pic he posted after the jump!