Table 2.
Predictor factor | No. of studies showing positive effect | No. of studies showing no effect | No. of studies showing negative effect |
---|---|---|---|
Synovitis | 0 | 2a | 1 |
Aspiration | 1 | 2 | 0 |
Effusion | 2 | 4 | 0 |
Severity of radiographic degeneration | 2 | 2 | 0 |
Sonographic-guided injection | 1 | 0 | 0 |
Worse pain | 1 | 1 | 0 |
Worse stiffness | 1 | 1 | 0 |
Worse knee function | 1 | 2 | 0 |
Duration of symptom | 0 | 2 | 0 |
aOne study used clinical assessment of synovitis.