A 45 year old was given steroids after renal transplant. After 2 years he had difficulty in walking and pain in both hips. Which one of the following is most likely cause?
Primary Osteoahritis
Avascular necrosis
Tuberculosis
Aluminum toxicity
Difficulty in walking and pain in both hips after 2 years of steroid intake is suggestive of avascular necrosis. Ref: Apley's System of Ohopedics and Fractures, 8th Edition, Pages 92-93; MR Imaging of the Body By Ernst J. Rummeny, Peter Reimer, Walter Heindel, 2009, Page 460