 |  |  |  |
| The medial incision(for a postero-medial OCD) | The medial approach | Defining the position for the osteotomy with the ankle joint open and talus visible anteriorally. | Pre-drilling the medial malleolus before performing the osteotomy at the marked level in the periosteum. The Tibialis posterior tendon is defined and visible posteriorally. |
 |  |  |  |
| The medial malleolar osteotomy using a MicroAire saw. | Opening the osteotomy to gain access to the medial talus and ankle. | Manouvering the Arthrex "corer" into position to remove the Osteochondral defect. | The defect "cored out" using the Arthrex Oats instruments. |
 |  |  |  |
| The void left by removing the defect. | The void filled by a similarly sized "graft" of a bone and cartilage from the knee. | Close up of the graft before final impaction. | Impaction of the graft. |
 |  |  |  |
| The graft seated. | A further small area requiring treatment. | The second graft in situ. | Replacement of the medial malleolus and fixation with screws in the pre-drilled holes/position. |