Abstract #5127

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

Brian Noehren^1,2, Richard Lawless³, Peter Hardy⁴, Anders Andersen³, and Moriel Vandsburger^5,6

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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