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 -
This patient has : -

History of steroids intake
Pain in both hip
Difficulty in walking


The diagnosis is AVN of the hip.
In 50% of idiopathic cases and 80% of steroid-induced AVN are bilateral.

About other options

Tuberculosis of hip is usually unilateral.
Primary osteoarthritis of hip does not occur at 45 years and has nothing to do with steroid intake.
Aluminium toxicity does not cause bilateral hip pain.
Primary osteoarthritis
Avascular necrosis
Tuberculosis
Aluminum toxicity