Table 3.
Summary of MRI results (n = ankles)
| Total injuries | Grade 0 | Grade 1 | Grade 2 | Grade 3 | Inter-observer kappa | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| n | % | n | % | n | % | n | % | n | % | ||
| Bone marrow edemalike signal intensity | |||||||||||
| Distal tibia | 12 | 6.6 | 171 | 93.4 | 4 | 2.2 | 6 | 3.3 | 2 | 1.1 | 0.75 |
| Distal fibula | 2 | 1.1 | 181 | 98.9 | 2 | 1.1 | 0 | 0 | 0 | 0 | 0.88 |
| Talus | 29 | 15.8 | 154 | 84.2 | 9 | 4.9 | 14 | 7.6 | 6 | 3.3 | 0.69 |
| Calcaneus | 35 | 19.1 | 148 | 80.9 | 15 | 8.2 | 12 | 6.5 | 8 | 4.4 | 0.71 |
| Navicular | 6 | 3.3 | 177 | 96.7 | 1 | 0.5 | 1 | 0.5 | 4 | 2.2 | 0.85 |
| Ectocuneiform | 3 | 1.6 | 180 | 98.4 | 1 | 0.5 | 0 | 0 | 2 | 1.1 | 0.85 |
| Peritendinous effusion | |||||||||||
| Posterior tibialis tendon | 145 | 79.2 | 16 | 8.7 | 97 | 53.0 | 32 | 17.5 | – | – | 0.57 |
| Flexor digitorum longus tendon | 78 | 42.6 | 13 | 7.1 | 44 | 24.0 | 21 | 11.5 | – | – | 0.59 |
| Flexor hallucis longus tendon | 131 | 71.6 | 12 | 6.6 | 63 | 34.4 | 56 | 30.6 | – | – | 0.53 |
| Peroneus longus and brevis tendon | 32 | 17.5 | 22 | 12.0 | 10 | 5.5 | 0 | 0 | – | – | 0.62 |
| Anterior tibialis tendon | 19 | 10.4 | 15 | 8.2 | 4 | 2.2 | 0 | 0 | – | – | 0.70 |
| Extensor hallucis longus tendon | 10 | 5.5 | 8 | 4.4 | 2 | 1.1 | 0 | 0 | – | – | 0.68 |
| Extensor digitorum longus tendon | 17 | 9.3 | 15 | 8.2 | 2 | 1.1 | 0 | 0 | – | – | 0.71 |
| Ligament injuries | |||||||||||
| Anterior talofibular ligament | 87 | 47.5 | 96 | 52.5 | 57 | 31.1 | 30 | 16.4 | 0 | 0 | 0.59 |
| Posterior talofibular ligament | 46 | 25.1 | 137 | 74.9 | 31 | 16.9 | 15 | 8.2 | 0 | 0 | 0.68 |
| Calcaneofibular ligament | 72 | 39.3 | 111 | 60.7 | 45 | 24.6 | 27 | 14.7 | 0 | 0 | 0.56 |
| Deltoid ligament | 28 | 15.3 | 155 | 84.7 | 16 | 8.7 | 12 | 6.6 | 0 | 0 | 0.61 |
| Achilles tendinopathy | 49 | 26.8 | – | – | – | – | – | – | – | – | 0.51 |
| Achilles tendon effusion | 21 | 11.5 | – | – | – | – | – | – | – | – | 0.56 |
| Cyst-like lesions | 10 | 5.46 | – | – | – | – | – | – | – | – | 0.84 |
| Talus | 7 | 3.82 | – | – | – | – | – | – | – | – | |
| Calcaneus | 3 | 1.64 | – | – | – | – | – | – | – | – | |
| Osteochondral lesions | 6 | 3.3 | – | – | – | – | – | – | – | – | 0.60 |
| Subcutaneous soft tissue edema | 25 | 13.7 | – | – | – | – | – | – | – | – | 0.63 |