Osteochondral lesions of the talus: a new magnetic resonance grading system with arthroscopic correlation.

Purpose: The purpose of this study was to show that magnetic resonance imaging (MRI) can accurately and noninvasively evaluate the articular cartilage overlying osteochondral lesions of the talus, using arthroscopy as the standard, and provide information about lesion stability. A classification system applicable to both MRI and arthroscopy is proposed.

Type Of Study: Retrospective review with MRI and arthroscopy correlation.