*A 34-year-old machinist presents with hip pain that has been getting progressively worse over the past two months. There was no precipitating traumatic event. His father had spontaneous onset of similar pain and had to get a hip replacement.*

*Which radiological findings might be present if this were due to avascular necrosis?*

A. Protrusio acetabulare

B. Non-uniform joint space loss

C. Shepherd's crock deformity

D. Crescent sign

E. Patchy sclerosis

F. Uniform loss of joint space

G. Brim sign

H. Snow capped appearance

I. Osteophyte formation