Abstract #0372

3-D cones UTE-T2* maps show early cartilage degeneration 2 years after ACL reconstruction

Ashley Anne Williams¹, Matthew R Titchenal¹, and Constance R Chu¹

¹Orthopaedic Surgery, Stanford University, Stanford, CA, United States

3-D cones UTE-T2* maps were examined in 22 subjects with reconstructed anterior cruciate ligaments (ACLR) and 16 uninjured controls for evidence of alterations to the subsurface cartilage matrix suggestive of cartilage at risk for early OA 2 years after surgery. Elevated UTE-T2* values in regions of deep tibiofemoral cartilage and in side-to-side UTE-T2* differences were detected. UTE-T2* values correlated to standard T2 values in tibial and posterolateral femoral regions. Together, these findings suggest that UTE-T2* mapping detects “pre-osteoarthritic” subsurface cartilage matrix changes that may occur following ACLR and thus can help to identify subjects at risk of developing OA.

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