GG, this is probably outside the expertise of almost everyone on the forum. have you ever tried WebMD? you would probably find the answer there. i think you need to talk to an anesthesiologist (not sure if that is spelled correctly) because i'm sure that they would know the lowdown on the nerve connections. the only blocks that i've had was during childbirth and then a spinal when i smashed my ankle. i din't have any residual problems. sorry, i can't help you...pat