Table 1 Key radiological measurements of the SLAC wrist pathological terms
Scapholunate diastasis (PA radiograph) | Rotary subluxation of the scaphoid (lateral radiograph) | Dorsal intercalated segment instability (DISI) (lateral radiograph) |
|---|---|---|
1. Scapholunate interval >4 mm (2–4 mm is suspected scapholunate diastasis) | 1. Scapholunate angle >60–80° (scaphoid tilted volarly) | 1. Scapholunate angle >80° (60–80° is suspected DISI; lunate tilted dorsally) |
2. Radioscaphoid angle >60° | 2. Radiolunate angle >10° | |
3. Capitolunate angle >30° |