I had brachyplasty 11 months ago under local anesthesia. During the procedure there were 2 to 3 times on each arm that the nerve was involved because I had seconds of severe sharp pain down to my pinky and my fingers trembled. Lasted seconds while he was cauterizing away the skin. Is it normal to still have almost complete numbness in back of oe arm area of about 3 inches from elbow above. The other arm has slight decreased sensation but not numbness like the left arm. Also is this permanent?