He said: "From what I remember, there was only one person involved but it was very scary as I didn't know what was going on."I guess I was an easy target and the only reason I was picked on was because I am small.
"You just have to ignore it but this is the first time I have been picked up and thrown about." Mr Henderson, who has dwarfism, was celebrating his birthday at the White Horse pub in Wincanton, Somerset, on October 7 when the prankster struck.
It came one month after England rugby players were caught 'dwarf throwing' at a bar during a drunken night out.
The team's boozy antics followed their first match victory against Argentina in the Rugby World Cup in New Zealand.
Mr Henderson, from Milborne Port, in Somerset, said the drunken punter picked him up after he went outside for a cigarette while his mates were playing pool.
But the victim, who also suffers from spinal stenosis, has struggled to walk properly since and has lost the strength in his back and legs.
Despite regular hospital visits for further scans and physiotherapy, Mr Henderson now has to use a zimmer frame to walk.
Doctors have told him he will need a wheelchair for longer journeys.
He said: "We were having a good night out to celebrate my birthday and there were a few of us drinking together in a corner of the pub.
"I went outside for a cigarette and the next thing I know I'm suddenly in the air and someone has got hold of me.