Abstract #1291

Diffusion-Weighted MRI in Juvenile Osteochondritis Dissecans (JOCD) at 3T

Kai D. Ludwig¹, Casey P. Johnson^1,2, Stefan Zbyn^1,2, Takashi Takahasi², Shelly Marette², Bradley J. Nelson³, Marc A. Thompkins³, Cathy S. Carlson⁴, and Jutta M. Ellermann^1,2

¹Center for Magnetic Resonance Research (CMRR), University of Minnesota, Minneapolis, MN, United States, ²Radiology, University of Minnesota, Minneapolis, MN, United States, ³Orthopaedic Surgery, University of Minnesota, Minneapolis, MN, United States, ⁴Veterinary Clinical Sciences, University of Minnesota, St. Paul, MN, United States

Diffusion-weighted MRI (DWI) may help elucidate the etiology and progression of juvenile osteochondritis dissecans (JOCD) by probing tissue/cellular characteristics of JOCD lesions and the underlying parent bone. In this study, we observed elevated DWI signal and increased apparent diffusion coefficient (ADC) values within and proximal to OCD lesions compared to surrounding bone marrow and control sites. ADC values within the lesion and the parent bone may help distinguish healing from non-healing lesions, thereby improving prognostication of JOCD and clinical decision making.

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