Table 2.
Results of each parameter of modified O’Driscoll score (Mean, n = 5)
| Tissue | Parameters | No PEMF | PEMF treated | ||
|---|---|---|---|---|---|
| Group 1 | Group 2 | Group 3 | Group 4 | ||
| Cartilage | Tissue morphology | 1.4 | 1.6 | 2.6c | 2.6 |
| Matrix staining | 1.2 | 1.8 | 1.8 | 3.4e | |
| Surface regularity | 2.2 | 2.6 | 2.4 | 2.6 | |
| Structure integrity | 1.4 | 1.6 | 1.6 | 2.0 | |
| Neocartilage alignment | 0.8 | 1.6 | 1.2 | 2.4e | |
| Chondrocyte clustering | 1.8 | 2.0 | 1.2 | 2.0 | |
| Hypocellularity | 0.8 | 2.0b | 2.0d | 3.4f | |
| Degenerative changes in adjacent cartilage | 2.8 | 3.0 | 2.8 | 3.0 | |
| Bonding to native cartilage | 2.0 | 2.0 | 2.0 | 2.0 | |
| Cell distribution | 0.6 | 2.6a | 1.0 | 3.4f | |
| Thickness of neocartilage | 1.8 | 2.0 | 1.6 | 2.0 | |
| Tidemark continuity | 1.0 | 1.0 | 0.8 | 1.0 | |
| Bone | Reconstruction of subchondral bone | 1.2 | 2.6a | 1.4 | 3.0f |
| Bone infiltration | 1.0 | 2.0b | 1.6c | 2.0f | |
| Bonding with adjacent bone | 1.2 | 2.8a | 2.8c | 3.0f | |
| Subchondral bone morphology | 1.6 | 2.6a | 3.2c | 3.6f | |
Mann–Whitney U test: a, Group 2 versus Group 1 (p < 0.05); b, Group 2 versus Group 1 (p < 0.005); c, Group 3 versus Group 1 (p < 0.05); d, Group 3 versus Group 1 (p < 0.005); e, Group 4 versus Group 1 (p < 0.05); f, Group 4 versus Group 1 (p < 0.005)