Osteochondral Lesions of the Talus: Retrograde Drilling with High-Field-Strength MR Guidance Seebauer CJ et al. - The authors performed and assessed a magnetic resonance (MR)-assisted navigation method for minimally invasive retrograde drilling of talar osteochondral lesions. Use of this interactive MR-assisted navigation method in combination with a passive aiming device allowed precise and rapid retrograde drilling of talar osteochondral lesions. [more...]