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Abstract #0568

Temporal & Regional Changes of T2* in the Repaired Meniscus

Matthew F. Koff1, Lisa A. Fortier2, Scott A. Rodeo3, Atsushi Takahashi4, Suzanne Maher5, Demetris Delos3, Parina Shah1, Hollis G. Potter1

1Department of Radiology & Imaging - MRI, Hospital for Special Surgery, New York, NY, USA; 2College of Veterinary Medicine, Cornell University, Ithaca, NY, USA; 3Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, NY, USA; 4Global Applied Science Laboratory, General Electric Healthcare, Menlo Park, CA, USA; 5Department of Biomechanics, Hospital for Special Surgery, New York, NY, USA

The poor sensitivity and qualitative nature of clinical knee meniscus healing evaluation precludes accurate decisions about return to activities of daily living. MRI is frequently used to evaluate meniscal repairs, but visualization of the meniscus is difficult due to short transverse relaxation times (T2). Qualitative MRI Ultrashort echo imaging (UTE) allows objective and quantitative assessment of meniscal healing. This study evaluated the qMRI technique of T2* mapping using UTE imaging as a biomarker of meniscal integrity. This goal was achieved by measuring the regional and temporal variation in T2* values in an ovine meniscal repair model.