Table 4.
Structural assessment by magnetic resonance imaging
| HA group | MSC‐1 group | MSC‐2 group | p value | |
|---|---|---|---|---|
| WORMS at baseline | ||||
| Total (0–332) | 30.9 ± 25.1 | 46.1 ± 18.1 | 40.1 ± 25.7 | .21 |
| Articular cartilage | 16.5 ± 13.4 | 23.2 ± 10.9 | 21 ± 14 | .3 |
| Meniscal integrity | 1.7 ± 1.3 | 1.1 ± 1.2 | 2.7 ± 1.9 | .15 |
| WORMS at 6 months | ||||
| Total (0–332) | 33.2 ± 25.7 | 46.6 ± 18.1 | 40.6 ± 21.4 | .3 |
| Articular cartilage | 16.7 ± 14.5 | 22.4 ± 10.8 | 21.3 ± 14.1 | .28 |
| Meniscal integrity | 1.7 ± 1.6 | 0.9 ± 1.2 | 2.7 ± 2.1 | .13 |
| WORMS at 12 months | ||||
| Total (0–332) | 33.6 ± 26.3 | 41.5 ± 14.3 | 40.5 ± 23.9 | .15 |
| Articular cartilage | 16.8 ± 14.5 | 23.1 ± 10.2 | 21.3 ± 13.8 | .3 |
| Meniscal integrity | 1.7 ± 1.6 | 0.9 ± 1.2 | 2.7 ± 2.1 | .13 |
Data are presented as n (%) or mean ± SD.
Abbreviations: HA, hyaluronic acid; MSC, mesenchymal stromal cells; WORMS, Whole‐Organ Magnetic Resonance Imaging Score.