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Abstract #0101

Towards the understanding of the the role of Functional strength markers in Cartilage-Bone Cross Talk: a PET/MRI study in isolated PFJOA patients

Rupsa Bhattacharjee1, Eric C. Hammond2, Koren E. Roach1, Emma Bahroos1, Richard B. Souza1,2, Sharmila Majumdar1, and Valentina Pedoia1
1Department of Radiology and Biomedical Imaging, University of California, San Francisco (UCSF), San Francisco, CA, United States, 2Department of Physical Therapy and Rehabilitation Science, University of California, San Francisco (UCSF), San Francisco, CA, United States

Synopsis

Keywords: Bone, PET/MR, SUV, T1rho, flexion strength, extension strength, patellofemoral OA, Cartilage-Bone-CrossTalk

In this exploratory study, we investigated standardized-uptake-values(SUV) from simultaneous bilateral PET-MRI, and individual joint loading in knees cross-sectionally in patients with isolated PFJOA. Additionally, to discover regions of colocalized changes in bone-cartilage interactions, we explored SUV interactions with cartilage biomarker T1rho relaxation values from high-resolution bilateral axial MAPSS. Strong negative correlations were between knee normalized isometric strength vs. maximum SUV in the lateral patella and medial trochlea, suggest higher degree of ongoing bone-remodelling combined with decreased knee flexion and extention strength. The existance of parallel higher trochlear bone remodelling and cartilage loss (disease progression) or vice-versa was also noted.

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Keywords