| 1 | Stage I. Rupture of deltoid ligament or avulsion of medial malleolus. | |
| 2 | Stage I. Transverse fracture of medial malleolus or rupture of deltoid ligament. | |
| 3 | The short oblique fibular fracture is high and the medial malleolar fracture is transverse. | |
| 4 | Absence of a medial malleolar fracture (fig. 3C) denotes that this supination-adduction injury stopped at stage I. | |
| 5 | Fig. 1-34 Osteotomy of medial malleolus for osteochondritis dissecans of talus. |