Abstract #2148

On the MRI Signature of Healed Juvenile Osteochondritis Dissecans (JOCD) in the Knee – The ‘Scar Sign’

Jutta Ellermann¹, Abdul Wahed Kajabi², Marc Tompkins³, Joe Luchsinger¹, Stefan Zbyn⁴, Shelly Marette¹, Bradley Nelson³, and Takashi Takahashi¹

¹Radiology, University of Minnesota, Minneapolis, MN, United States, ²CMRR/Radiology, University of Minnesota, Minneapolis, MN, United States, ³Orthopedics, University of Minnesota, Minneapolis, MN, United States, ⁴University of Minnesota, Minneapolis, MN, United States

Synopsis

Keywords: Bone, Adolescents, Epiphyseal Cartilage, Juvenile Osteochondritis DissecansHealing of Juvenile Osteochondritis Dissecans requires progressive lesion ossification and osseous bridging with the parent bone. The ‘Scar Sign’ is an MR imaging finding that documents a healed knee JOCD lesion and is characterized by a distinct hypointense line at the prior lesion – parent bone interface, best identified on PD- or T1-weighted images w/o FS on routine clinical MRI. Knowledge of stages, timeline of healing and expected MR imaging findings of JOCD is important for the reporting Radiologist. It will facilitate prognostication and can serve as a reliable outcome measure for future research on evidence based Juvenile Osteochondritis Dissecans management.

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