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Abstract #1838

Retrograde Drilling of Osteochondral Lesions of the Knee with MRI Guidance

Christian Jrgen Seebauer1, Hermann Josef Bail2, Jens Christian Rump3, Ulf Teichgrber3

1Center for Musculoskeletal Surgery, Charit, Berlin, Germany; 2Department of Trauma and Orthopedic Surgery, Clinic Nuremberg, Nuremberg, Germany; 3Department of Radiology, Charit, Berlin, Germany

Osteochondritis Dissecans (OD) of the knee is a common articular lesion in adolescents and young adults. Retrograde drilling is an alternative in surgical treatment before more invasive and complex procedures are necessary; however drilling under fluoroscopic guidance via the epiphyses is technically challenging in terms of maintaining drill depth and accuracy of drill placement. The purpose of this study was to evaluate applicability and accuracy of a passive navigation method by drilling a simulated OD target at the knee with MRI guidance. Interactive MR navigation allowed precise drilling of OCD of the knee. Targeting was possible with a single drilling.