Think of the spine as a ladder held in place by bungee cords. Albeit strong ones. Now imagine they contract suddenly and asymmetrically this will cause the rigid bone structure to abrade and pinch the nerves that exit the ladder that the bones form. This contraction causes the nerves to send impulses to the brain that can say your hands hurt.

And here's the dichotomy your hands (if it is you spinal nervous system) haven't really been damaged. It's the spinal nerves sending erroneous messages to the brain. That said there's a lot of damage you could have really done to the actual nerves that are in you arm, wrist and hand structure.

Have they eliminated this possibility?