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Pattern of joint involvement in patients with osteonecrosis (N = 23) in Group 1.
| Pattern | Frequency (n) |
Percentage (%) |
|---|---|---|
| Bilateral knees only | 6 | 26.1 |
| Unilateral knee only | 4 | 17.4 |
| Unilateral hip, knee result missing | 4 | 17.4 |
| Bilateral hips and bilateral knees or bilateral hips and unilateral knee |
3 | 13.0 |
| Unilateral hip and unilateral knee or unilateral hip only |
3 | 13.0 |
| Unilateral hip and bilateral knees or bilateral hips only |
2 | 8.7 |
| Bilateral knee, hip result missing | 1 | 4.3 |
