This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Management in Orthopedics, Subject name: Orthopaedics
Action of intramedullary 'K' nail is - 
Select and explain. 
A. Two-point fixation, B. Three-point fixation, C. Compression, D. Weight concentration
B: Three-point fixation
Answer: B: Three-point fixation 
Explanation: Kuntsher&;s clover leaf intra medullary nail (K nail). Fixation of the K nail is based on 3 point fixation. It fixes bone at 3 points, at either ends and at isthmus. REF:Essential ohopaedics- 5th edn- pg no 373.