<prompt> Tinels sign is used -To asses the severity of damage of nerveTo classify the type of nerve injuryTo locate the site of nerve injuryTo asses the regeneration  <response>: Ans. is d i.e., To asses the regeneration Tinels sign: Brisk percussion along the course of an injured nerve from distal to proximal direction may elicit a tingling sensation in the distal distribution of the nerve. This is described as Tinels sign. The point of hypersensitivity marks the site of abnormal nerve sprouting: if it progresses distally at successive visits this signifies regeneration; if it remains unchanged this suggests a local neuroma. 