This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Peripheral Nerve Injuries, Subject name: Orthopaedics
Tinels sign is used - 
Select and explain. 
A. To asses the severity of damage of nerve, B. To classify the type of nerve injury, C. To locate the site of nerve injury, D. To asses the regeneration
D: To asses the regeneration
Answer: D: To asses the regeneration 
Explanation: 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.