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: Surgery
Pipkin's classification system is used for ? 
Select and explain. 
A. Fracture femur head, B. Fracture femur shaft, C. Fracture proximal tibia, D. Fracture calcaneum
A: Fracture femur head
Answer: A: Fracture femur head 
Explanation: Ans. is 'a' i.e., Fracture femur head Pipikin's classification of femoral head fracture Type I : Femoral head fracture inferior (caudal) to fovea. Type II : Femoral head fracture superior (cephalad) to fovea. Type III : Femoral head fracture with associated femoral neck fracture. Type IV : Type I, II or III with associated acetabular fracture.