Table 2.
The radiologic stage of osteoarthritis according to Eaton and Littler, stage of cartilage damage per field in the intraoperative template of trapezium bone (T1-T9), and first metacarpal base (M1-M9) in analyzed thumb saddle joints
| Nr. | Eaton-Littler classification | T1 | T2 | T3 | T4 | T5 | T6 | T7 | T8 | T9 | M1 | M2 | M3 | M4 | M5 | M6 | M7 | M8 | M9 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 |
| 2 | 3 | 3 | 5 | 5 | 3 | 5 | 5 | 3 | 5 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 3 | 3 | 3 |
| 3 | 3 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 1 | 1 | 1 | 3 | 3 | 3 | 5 | 5 | 5 |
| 4 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 5 | 4 | 4 | 4 | 4 |
| 5 | 2 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 |
| 6 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 2 | 2 | 2 | 2 | 1 | 2 | 2 | 2 | 2 |
| 7 | 3 | 3 | 3 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 8 | 3 | 5 | 5 | 5 | 5 | 5 | 4 | 3 | 3 | 3 | 2 | 2 | 2 | 5 | 5 | 5 | 3 | 3 | 3 |
| 9 | 3 | 4 | 4 | 4 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 3 | 3 | 3 | 1 | 1 | 1 |
| 10 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 | 5 | 5 | 4 | 5 | 5 | 5 |
| 11 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 3 | 3 | 3 | 5 | 5 | 3 | 5 | 3 | 3 |
| 12 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 1 |
| 13 | 2 | 5 | 3 | 4 | 5 | 3 | 4 | 5 | 3 | 4 | 5 | 2 | 4 | 5 | 2 | 4 | 5 | 2 | 4 |
| 14 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| 15 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 3 |
| 16 | 2 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 5 | 1 | 1 | 1 | 3 | 3 | 3 | 5 | 5 | 5 |
| 17 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 4 | 4 | 4 |
| 18 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 19 | 3 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 |
| 20 | 2 | 2 | 2 | 2 | 2 | 5 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 5 | 5 | 2 | 2 | 2 | 2 |