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Abstract #5127

Evaluation of T1p time in the quadriceps muscle after an Anterior Cruciate Ligament Reconstruction: Relationship to muscle strength and injury recovery

Brian Noehren1,2, Richard Lawless3, Peter Hardy4, Anders Andersen3, and Moriel Vandsburger5,6

1Rehabilitation Sciences, University of Kentucky, Lexington, KY, United States, 2Orthopaedic Surgery, University of Kentucky, Lexington, KY, United States, 3University of Kentucky, Lexington, KY, United States, 4Radiology, University of Kentucky, Lexington, KY, United States, 5Department of Physiology, University of Kentucky, Lexington, KY, United States, 6Department of Bioengineering, University of California Berkeley, CA, United States

Anterior Cruciate Ligament Injuries are associated with long term loss of quadriceps muscle strength. Accumulation of greater collagen in the extracellular matrix around muscle fibers could limit recovery. T1p applied to the quadriceps muscle could identify patients at risk for not having a good recovery because of collagen deposition. T1p imagining of the injured and non injured quadriceps of 6 subjects was performed. We found significantly higher T1p times in the injured limb as well as a significant association to greater muscle weakness. These results show the potential application of T1p to identify individuals with muscle dysfunction.

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