Table 1 Frequency of joints with osteonecrosis based on three phasic bone scintigraphy and MRI
Variables |  | Patients with asymptomatic osteonecrosis n = 8 | Patients without asymptomatic osteonecrosis n = 9 | Total n = 17 |
|---|---|---|---|---|
Number of involved Joints in bone scintigraphy | Range | 1 −5 | 1 −5 | 1 −5 |
Median (IQRa) | 2.5 (2.00- 4.00) | 2.00 (1.00- 2.00) | 2.00 (1.00—3. 0) | |
Number of involved joints in MRI | Range | 1 – 3 | Not done | 1 −3 |
Median (IQR) | 1.00 (1.00- 2.75) | Not done | 0.00 (0.00- 1.00) |