This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Ohopedics Oncology, Subject name: Orthopaedics
X-ray proximal femur in a patient with pain hip. The deformity shown is: 
Select and explain. 
A. Blade of grass deformity, B. Shepherd crook deformity, C. Chicken wire appearance, D. Corduroy appearance
B: Shepherd crook deformity
Answer: B: Shepherd crook deformity 
Explanation: "Fibrous dysplasia of proximal femur has shepherd crook deformity".