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?
A. Primary Osteoarthritis
B. Avascular necrosis
C. Tuberculosis
D. Aluminum toxicity
Correct answer : B. Avascular necrosis
Mnemonic for causes of avascular necrosis other than fracture – SCLERA
S – Steroids
C – Caisson’s disease
LE – Lupus Erythematosus
R – Radiation
A – Alcohol