Table 1 .

Demographic information on age, gender, body mass index and the aetiology of AVN

Demographics
Age (years)	21–30	1 (8%)
	31–40	7 (54%)
	41–50	2 (15%)
	51–60	2 (15%)
	61–70	1 (8%)
Gender	Male	7 (54%)
	Female	6 (46%)
BMI	22–26	6 (46%)
	27–30	5 (38%)
	31–35	2 (15%)
Aetiology
Steroid use		14%
Alcohol		28%
Idiopathic		36%
Post-traumatic		22%
Symptom progression
<30 days		22%
>30 days		78%
Comorbidities
Hypertension		22%
Diabetes mellitus		14%
Metastatic CA		7%
Atrial fibrillation		14%

Data expressed as n (%) unless otherwise indicated.