• Leonardo Intelangelo, Cristian Mendoza, Ignacio Lassaga, Alexandre C Barbosa, Biurrun ManresaJoséJInstitute for Research and Development on Bioengineering and Bioinformatics (IBB), CONICET-UNER.Centre for Rehabilitation Engineering and Neuromuscular and Sensory Research (CIRINS), Faculty of Engineering, National University of Entre, and Christian Mista.
• Musculoskeletal Research Unit-UIM, University Center for Assistance, Teaching, and Research-CUADI, University of Gran Rosario-UGR, Rosario, Santa Fe.
• Clin J Pain. 2023 Nov 1; 39 (11): 595603595-603.

ObjectiveThe aim of the study was to assess short-term changes in shoulder muscle activity elicited by dry needling in chronic unilateral shoulder pain (USP) patients.MethodsA randomized, double-blind, placebo-controlled clinical trial was conducted, in which 30 volunteers with USP were recruited and randomly assigned to either real or sham dry needling conditions. Pain intensity scores, pressure pain threshold, glenohumeral internal rotation angles, and electromyographic activity during isotonic shoulder tasks (shoulder flexion and extension) were assessed before, immediately, and 72 hours after the intervention in the infraspinatus and deltoid muscles.ResultsA single application of real dry needling resulted in lower pain intensity scores and a larger range in glenohumeral internal rotation 72 hours after the intervention in comparison with sham dry needling. No differences in pressure pain threshold or muscle activity were observed due to the intervention.DiscussionA single application of real dry needling resulted in clinically significant changes in the short term. No differences were detected in muscle activation in the infraspinatus or deltoid muscles. Complementary interventions and longer follow-up times may be required to observe changes in muscle activity.Copyright © 2023 Wolters Kluwer Health, Inc. All rights reserved.

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