Changes in Clinical Outcome after Injection According to the Stage of Osteoarthritis
| Scale | Stage | Before injection | 3 months after injection | 1 year after injection |
|---|---|---|---|---|
| VAS | Stage 2 | 5.1 | 3.3 | 4.0 |
| Stage 3A | 5.3 | 1.9 |
2.0 |
|
| Stage 3B | 5.5 | 2.5 | 4.4 | |
| Stage 4 | 6.0 | 4.0 | 5.7 | |
| p-value |
0.539 | 0.014 | 0.003 | |
| AOFAS | Stage 2 | 71.3 | 79.2 | 75.8 |
| Stage 3A | 70.1 | 82.0 | 79.7 | |
| Stage 3B | 62.6 | 75.1 | 62.4 | |
| Stage 4 | 65.0 | 77.7 | 63.7 | |
| p-value |
0.117 | 0.496 | 0.05 | |
| FAOS | Stage 2 | 63.3 | 71.7 | 70.4 |
| Stage 3A | 63.5 | 73.5 | 70.6 | |
| Stage 3B | 59.4 | 68.4 | 61.9 | |
| Stage 4 | 51.8 | 66.0 | 66.2 | |
| p-value |
0.303 | 0.583 | 0.391 |
VAS: visual analogue scale, AOFAS: American Orthopaedic Foot and Ankle Society, FAOS: Foot and Ankle Outcome Score.
*ANOVA was used for comparing clinical results for each stage. †p<0.05 between stage 2 and 3A in post-hoc test; ‡p<0.05 between stage 3A and 3B in post-hoc test; §p<0.05 between stage 3A and 4 in post-hoc test.
