Table 2. Magnitude of DRUJ translation in specific wrist and forearm positions (mm) (average ± SD, n = 9).
| Neutral | Extension | Rad. deviation | Pronation | Supination | |
|---|---|---|---|---|---|
| Normal wrists | 7 ± 3 | – | – | 6 ± 5 | 4 ± 5a |
| Normal wrists | 7 ± 3 | 5 ± 2a | 5 ± 2 | – | – |
| UCL cut | 7 ± 3 | 7 ± 3 | 6 ± 3 | – | – |
| RUL cutb | 14 ± 4 | 12 ± 3 | 10 ± 4a | – | – |
| ECU-floor cutb | 20 ± 7 | 21 ± 7 | 21 ± 7 | – | – |
Abbreviations: DRUJ, distal radioulnar joint; ECU-floor, sheath floor of extensor carpi ulnaris tendon; RUL, radioulnar ligaments complex; SD, standard deviation; UCL, ulnocarpal ligaments complex.
a
Statistically significant difference from neutral position data in the same row.
b
Statistically significant difference from data in the upper column.