Neeps,
Sorry to hear that and only the doctors at OASC will be able to give a definitive answer. Assuming that is only a 'similar' what if condition the best we can offer is a probably 'no chance'.
It all boils down to training risk, return of service and long term costs.
In the short term you might become a training risk, unable to provide return of service and ultimately walk away with a disability pay out. The RAF is not part of the welfare state and avoids risk and cost where it can be reasonably anticipated.
The whole ball park changes if the problem arises once you have joined and they used to do everything possible to return you to duty although that level of medical care has been transfered to the NHS the principle still applies. By getting you fit again it ensures the 'return of service' and delays the inevitable disability payment until much later.
So bottom line, only the medical board at OASC will say yeah or nay.
AIDU, when was the operation?