I'm sorry to hear of your accident, Ancient Angel...and your duty restrictions. I am in similar circumstances and we're the same age, so I can relate.
I am recuping from neurosurgery and have applied for SSD to try and get some income for now. In the future if I can, I'm looking ahead to the possibility of nonlifting jobs: like MDS coordinator for long term care, or case management in a facility...total paperwork jobs are out there but can be hard to find. I have worked with charge nurses and supervisors who do not ever lift, but it takes a lot of willpower not to 'jump into the fray' in an emergency and risk injury to yoursel. I'm better off not going that route.....but maybe you could consider that.
With your police background , have you considered legal nurse consulting? I'd bet attorneys would find you invaluable with a police and nurse background...if you like legal work.
Check other threads on Allnurses like "Over 50 with health related problems" and others with similar titles. There are quite a few of us around here in similar circumstances as yours....write anytime and good luck...I know it's not easy dealing with disabling injury. God bless.