Table 2 The presence of radiographic wrist osteoarthritis evaluated independently by two blinded assessors
Osteoarthritis (OA) grading system | Assessor 1 | Assessor 2 | ||
|---|---|---|---|---|
Trapeziectomy | Trapezium intact | Trapeziectomy | Trapezium intact | |
n (%), n | n (%), n | n (%), n | n (%), n | |
Kellgren–Lawrence | ||||
OA | 28 (25), 10 | 12 (26), 11 | 23 (20), 8 | 10 (22), 7 |
No OA | 86 (75), 28 | 34 (74), 27 | 91 (80), 30 | 36 (78), 31 |
SLAC | ||||
OA | 28 (25), 10 | 12 (26), 11 | 23 (20), 9 | 10 (22), 9 |
No OA | 86 (75), 28 | 34 (74), 27 | 91 (80), 29 | 36 (78), 29 |
Five-zones | ||||
Zone 1–2 (radioscaphoid) | ||||
OA | 28 (25), 10 | 11 (24), 10 | 23 (20), 9 | 10 (22), 9 |
No OA | 86 (75), 28 | 35 (76), 28 | 91 (80), 29 | 36 (78), 29 |
Zone 3 (radiolunate) | ||||
OA | 2 (2), 1 | 3 (6), 1 | 6 (5), 0 | 4 (9), 2 |
No OA | 112 (98), 37 | 43 (94), 37 | 108 (95), 38 | 42 (91), 36 |
Zone 4–5 (midcarpal) | ||||
OA | 12 (10), 4 | 5 (11), 3 | 26 (23), 9 | 10 (22), 8 |
No OA | 102 (90), 34 | 41 (89), 35 | 88 (77), 29 | 36 (78), 30 |
Scapholunate interval | ||||
Increased | 14 (12), 6 | 7 (15), 5 | 14 (12), 8 | 9 (20), 7 |
Normal | 100 (88), 32 | 39 (85), 33 | 100 (88), 30 | 37 (80), 31 |