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Table 1 Basic characteristic of the patient participants

From: Dynamic evolution of osseous structure in osteonecrosis of the femoral head and dynamic collapse risks: a preliminary CT image study

Characteristic Amount (%) of patients, n = 50
Age, years, mean (SD) 38.12 (10.14)
Gender
 Male 28 (56)
 Female 22 (44)
Etiology
 Alcohol 18 (36)
 Corticosteroid 21 (42)
 Idiopathic 11 (22)
 Kerboul’s angle, degree, mean (SD) 285.24 (36.40)
ARCO classification
 II 29 (58)
 IIIa 21 (42)
 Disease duration, months, mean (SD) 17.52 (10.84)
  1. SD standard deviation
  2. *Unless stated otherwise