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
Not true about subtrochanteric fracture 
Select and explain. 
A. Russel and Taylor classification, B. Proximal fragment shows flexion deformity, C. Treated with Smith Peterson nail, D. Shows abduction deformity
C: Treated with Smith Peterson nail
Answer: C: Treated with Smith Peterson nail 
Explanation: Treated with cephalomedullary nail.
Femur neck fracture is treated with Smith Peterson nail.