JSN on (a) the AP view, (b) the FP view
| Number | % | |
|---|---|---|
| (a) JSN on the AP view in 58 patients with incipient OAH | ||
| superolateral JSN | 21 | 36.2 |
| superior | 7 | 12.0 |
| superomedial and medial | 8 | 13.8 |
| doubtful | 10 | 17.2 |
| absent | 12 | 20.6 |
| (b) JSN on the FP view in the 22 cases of OAH with doubtful or absent JSN on the AP view | ||
| anterosuperior JSN | 11 | 50.0 |
| posterior | 5 | 22.7 |
| doubtful (3 post, 1 ant-sup) | 4 | 18.0 |
| absent | 2 | 9.2 |