Abbey C. Thomas, Edward M. Wojtys, Catherine Brandon, Riann M

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Presentation transcript:

Muscle atrophy contributes to quadriceps weakness after anterior cruciate ligament reconstruction Abbey C. Thomas, Edward M. Wojtys, Catherine Brandon, Riann M. Palmieri-Smith Journal of Science and Medicine in Sport Volume 19, Issue 1, Pages 7-11 (January 2016) DOI: 10.1016/j.jsams.2014.12.009 Copyright © 2015 Sports Medicine Australia Terms and Conditions

Fig. 1 Screenshot from strength and QAF testing. The blue line represents the patient's real-time torque output. The solid black line corresponds to the patient's peak value from the MVIC trials and also serves as a threshold for QAF testing. Real-time torque output must cross threshold for the electrical stimulus to be delivered. The dotted line represents the patient's target value, which was set 10% above maximal strength. The black arrow corresponds to delivery of the electrical stimulus. QAF=central activation failure. MVIC=maximal voluntary isometric contraction. (For interpretation of the references to color in this figure legend, the reader is referred to the web version of this article.) Journal of Science and Medicine in Sport 2016 19, 7-11DOI: (10.1016/j.jsams.2014.12.009) Copyright © 2015 Sports Medicine Australia Terms and Conditions

Fig. 2 Results of hierarchical linear regression analysis. MVIC=maximal voluntary isometric contraction. Journal of Science and Medicine in Sport 2016 19, 7-11DOI: (10.1016/j.jsams.2014.12.009) Copyright © 2015 Sports Medicine Australia Terms and Conditions

Fig. 3 Representative magnetic resonance image demonstrating quadriceps atrophy. Images were obtained from proton density-weighted images with the following parameters: repetition time 200–3000ms, echo time 35ms, slice thickness 6mm, gap between slices 6mm, matrix 364×180, and field of view 480mm×281mm. VL=vastus lateralis. RF=rectus femoris. VM=vastus medialis. VI=vastus intermedius. Journal of Science and Medicine in Sport 2016 19, 7-11DOI: (10.1016/j.jsams.2014.12.009) Copyright © 2015 Sports Medicine Australia Terms and Conditions