Table 5.
Proportion of radiological determined knee osteoarthritis according to worst affected knee and compartment among floor layers (n = 134) and graphic designers (n = 120)
| Floor layers | Graphic designers | |||
| Knee osteoarthritis‡ | n | (%) | n | (%) |
| Joint space narrowing ≥ 25% | ||||
| - Tibiofemoral | 10 | (8) | 2 | (2) |
| - Patellofemoral | 5 | (4) | 8 | (7) |
| Joint space narrowing 50–75% | ||||
| - Tibiofemoral | 7 | (5) | 7 | (6) |
| - Patellofemoral | 4 | (3) | 8 | (8) |
| Obliteration or bone attrition | ||||
| - Tibiofemoral | 5 | (4) | 6 | (5) |
| - Patellofemoral | 3 | (2) | 5 | (4) |
‡ Combined TF and PF OA: floor layers, n = 3; graphic designers, n = 6