Adrian Maguire today announced his retirement from race-riding on medical grounds.
In a statement Maguire said: "It is with great sadness that on medical advice I have to announce that I will not be returning to riding.
"I have received a report from the Jockey Club's Independent Neurological and Spinal Surgeon Professor Peter Hamlyn, who examined scans taken recently of my injured neck."
Maguire suffered his neck injuries in a fall from Luzcadou at Warwick in March.
He added: "I have discussed the medical reports with the Jockey Club's chief medical adviser Dr Michael Turner, who has explained that under no circumstances would he be able to pass me fit to ride again.
"With the hazardous nature of jump racing, I have to accept that resuming my career is no longer an option.
"I have enjoyed a fantastic career as a jump jockey and I never wanted this day to come.
"I have no immediate plans and I will take all the time available to discuss things with my family over the coming weeks and months."
Maguire's most famous success was his narrow 1992 Tote Cheltenham Gold Cup victory aboard Cool Ground - and he also won Kempton's King George VI Chase twice, on Barton Bank (1993) and Florida Pearl (2001).