mike tyson spotted at miami airport in a wheelchair 

 He was sitting in a wheelchair and holding a walking stick 

he was suffering from Sciatica 

Sciatica is a condition in which the sciatic nerve gets compressed.

 It is a nerve-impacting condition causing pain in the lower back and leg.

The legendary heavyweight is one of the most iconic fighters of all time

 In his 58-fight career, Tyson won 50 of those matches, 44 of them by KO.

After Ali, Tyson is highly respected in the world