This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Orthopaedics
Metastasis not'ound in - 
Select and explain. 
A. Femur, B. Humerus, C. Fibula, D. Spine
C: Fibula
Answer: C: Fibula 
Explanation: Extremities distal to elbow and knee are least commonly involved in metastasis.


Fibula is distal to knee.