He suffered a broken pelvis, ruptured bladder, shattered left wrist and nerve damage to both thighs.
But the dad-of-four from Shelf Hall Lane, Shelf, fought to survive and is now fund-raising to help thousands of people with an incurable disease.
"I just want to give something back," he said.
"A lot of my recovery is down to the care at the hospital."
His wife Wendy, a nurse at Calderdale Royal Hospital and owner of the White Lion, Burnley Road in Mytholmroyd, is organising a charity night for the lymphedema clinic at the hospital.
Mr Davison was left with the condition – which causes limbs to swell – after the quarry accident at Edenfield, Lancashire, in February 1996.
He was a lorry driver and was trapped in front of his vehicle by a digger which slid 10ft down a muddy hill.
He spent a year in hospital and was in a wheelchair for months. "It was a scary time," he said.
Then doctors told him he had lymphedema – an incurable condition.
In Mr Davison's case, it means his legs fill with fluid, causing them to swell.
He has to have them bandaged up 24 hours-a-day to stop them ballooning and it means he can not fly, has difficulty exercising and has to sleep with his legs elevated.
When he was diagnosed, there was no specialist treatment centre for the disease, but Mr Davison has helped campaign for the clinic now running at Calderdale Royal.
"I was left with the condition after my accident but you can get it just from an insect bite.
"The clinic is always full. It affects more people than you would think," said Mr Dawson.
The event is on Wednesday December 10 from 8pm at the White Lion..
It will feature performances by country and western singer Paul Conner and rock and roll act Graham G, raffles and curry.
Admission is free and all proceeds go to the lymphedema clinic.