Figure 7

Fluoroscopy-guided positioning of the pilot Kirschner wire into the center of a medial osteochondral lesion (OCL) in AP and lateral plain view radiographs. Guided by the Kirschner wire, the hollow trephine was gently passed through the sclerotic zone of the osteochondral lesion (OCL), controlled by fluoroscopy in AP (A) and lateral (B) plain view radiographs. Debridement of the osteochondral lesion (OCL) through the drilling hole. The aspirate from the ilium could be injected under the guidance of the hollow trephine to the OCL site. Note: The patient consented to publish the specific information.