Table 1.

Prevalence of associated risk factors and diseases for secondary osteonecrosis

Risk factor and/or diagnosis	Prevalence (%)
Corticosteroids	22
Excessive alcohol consumption	19
Post-traumatic	11
Idiopathic	21
Systemic lupus erythematosus	5
Sickle cell disease	4
Other	3
Renal failure and/or transplant	13
Heart transplant	1
Gaucher disease	1