Local anaesthetics use does not suppress muscle ac

Authors: David A Stone John P Abt Anthony J House Jonathan S Akins Jonathan J Pederson Karen A Keenan Scott M Lephart

Publish Date: 2012/04/07

Volume: 21, Issue: 6, Pages: 1269-1278

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Abstract

To determine if peroneus longus PL peroneus brevis PB medial gastrocnemius MG and tibialis anterior TA muscle activation patterns during inversion perturbation and running tasks are suppressed following lidocaine injection to the anterior talofibular ATF and calcaneofibular CF ligament regionsFourteen recreationally active male subjects age 248 ± 29 years height 1770 ± 60 cm mass 777 ± 67 kg participated Testing was performed under five injection conditions to the ATF and CF regions 1 ml saline 1 ml lidocaine 3 ml saline 3 ml lidocaine or no injection Following injection condition traditional ankle taping was applied Electromyography patterns of the PL PB MG and TA were collected while subjects performed continuous lateral jumps on a custombuilt device which elicited an ankle inversion perturbation and treadmill running 335 m s−1 05  inclineNo significant differences were demonstrated in muscle activation patterns of the PL ns PB ns MG ns or TA ns for any variable across injected conditions during both tasks Statistical power was 0214–0526 for the PL 0087–0638 for the PB 0115–0560 for the MG and 0118–0410 for the TAInjection of lidocaine up to 3 ml to the ATF and CF regions did not suppress muscle activity of the PL PB MG or TA during the inversion perturbation or running tasks Injection up to 3 ml of 1  lidocaine to the ATF and CF regions may be used without sacrificing the muscle activation patterns about the ankle This finding is clinically relevant since the use of the injection does not put the patient at any higher risk of reinjury to the site

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