Table 2 Characteristics of patients
From: High-energy extracorporeal shock wave therapy for nontraumatic osteonecrosis of the femoral head
Characteristic | Total |
|---|---|
Number of patients | 31 |
Number of hips | 44 |
Sex | |
Male | 23 |
Female | 8 |
Mean age (year) | 41.2 |
Mean follow-up (month) | 130.6 |
ARCO stage (hips) | |
I | 8 |
II | 28 |
III | 8 |
Risk factor (hips) | |
Corticosteroid | 24 |
Alcoholic | 9 |
Idiopathic | 11 |