Bit of a non sequiter here.
I saw a television programme many years ago which featured a woman in a wheelchair who could not feel anything below her waist, but could be made orgasm with a backrub.
Is this true/common?
(So tempted to put ‘Answers needed quickly’)
Mmm. That’s all I have to say, 'kay?
I’ve brought a non-paralyzed person to orgasm with a backrub, but I’m blessed to be married to a woman who has no difficulty achieving orgasm (although, we did notice a slight dip in this post-partum)
Everyone’s different; there are probably a small percentage of able-bodied folk who can climax via a backrub. I read a book years ago that mentioned a woman who could climax by rubbing her earlobes.
I don’t doubt that there are paraplegics who can climax via backrub, but I would not expect the percentage of paraplegics who can do this to be any greater than the percentage of able-bodied folk with the same ability.
I’d try a frontrub, myself.
I have brought some women to orgasm with non-genital stimulation such as the above mentioned rubbing her earlobe, well her ear. I also have seen that some women can organism without any stimulation just really ‘thought’ alone. So I don’t see any problem with the OP premise happening, though it really would depend on the person.
Not this one.
I have dated several women who could be brought to orgasm by breast and or nipple stimulation, so I don’t see why it wouldnt be feasible.
Forgive my ignorance on this, but do you have orgasms at all?
I happen to know (;)) that this is possible on a non-paralysed person, so why not?
What is your definition of “back?”
Note that there is a difference between orgasm, which is triggered by the brain, which can learn to trigger it based on various physical stimuli (or even non-physical ones, like videos or books – see teenage boys for examples), and ejaculation, which is a physical event triggered by the sympathetic nervous system.
To clarify, this woman did not have this ability before her accident.
Oh yeah. Good ole fashioned ones, too. 
The skin is one of the larger organs of the body, the brain has not been proven to be paralysed. The OP did not state the reason of paralysis. The noticed effect is not only probable but possible. and as earlier posts suggest that there are many things we do that should not have the outcomes they do, I suggest more experimentation.