Table II.
MRI characteristics preoperatively and 6 months postoperatively
| Preoperative MRI | Postoperative MRI | |||||
|---|---|---|---|---|---|---|
| Characteristic | n | % | n | % | ||
| Tear classification | ||||||
| Low-grade (<50%) | 5 | 55.6 | – | – | ||
| High-grade (≥50%) | 4 | 44.4 | – | – | ||
| FI grade | ||||||
| 0 | 9 | 100.0 | 6 | 66.7 | ||
| 1 | 0 | 0.0 | 0 | 0.0 | ||
| 2 | 0 | 0.0 | 2 | 22.2 | ||
| 3 | 0 | 0.0 | 1 | 11.1 | ||
| 4 | 0 | 0.0 | 0 | 0.0 | ||
| Healed | ||||||
| Yes | – | – | 7 | 77.8 | ||
| Partially healed | – | – | 2 | 22.2 | ||
| Mean | SD | Mean | SD | Change | P-value | |
| ML tendon thickness (mm) | 5.9 | 2.1 | 11.7 | 4.3 | 5.9 | <0.001 |
| AP tendon width (mm) | 17.9 | 6.1 | 22.0 | 7.2 | 4.7 | 0.02 |
| Tendon CSA (mm2) | 195.1 | 69.9 | 243.5 | 80.3 | 106.5 | 0.001 |
| Medius CSA (mm2) | 1021.3 | 492.8 | 889.6 | 196.0 | −183.3 | 0.06 |
| Minimus CSA (mm2) | 799.3 | 347.4 | 779.9 | 276.7 | −80.2 | 0.18 |