United Kingdom, Jan. 27 -- Quinton Aaron has a rare cyst on his spine.

The Blind Side star - who starred opposite Sandra Bullock in the 2009 Oscar winning film - was hospitalised last week after collapsing at his home, and family sources have revealed the outcome of a series of tests.

The insiders told TMZ doctors are now undergoing more studies to determine whether the cyst is benign, but the 41-year-old actor may need to undergo back surgery.

If the operation goes ahead, Quinton will require extensive physical therapy afterwards and could be confined to a wheelchair for some time.

The update comes a day after the actor's wife Margarita revealed he had woken up.

She told TMZ: "He opened his eyes today and gave a thumbs up."

Quinton...