Ischemic Compression After Dry Needling of a Latent Myofascial Trigger Point Reduces Post-needling Soreness Intensity and Duration.

Myofascial trigger points (MTrPs) are identified through physical examination as hypersensitive spots within taut bands of skeletal muscle, painful on compression, triggering characteristic referred pain and generating motor dysfunction as well as autonomic phenomena. Different dry needling procedures have been described in the treatment of MTrPs. Needling therapies which consist in partially inserting and withdrawing the needle from the trigger point site in order to elicit local twitch responses are associated with higher effectiveness in releasing MTrPs. Deep dry needling has obtained a grade A recommendation compared to sham, for immediate reduction of pain in patients with upper-quadrant myofascial pain syndrome. Nevertheless, trigger point dry needling are frequently associated to a post-needling soreness. The application of ischemic compression (IC) after trigger point injection in the upper trapezius muscle has shown higher reduction of pain and disability in myofascial pain patients, compared with trigger point injection alone. To the authors' knowledge, no previous studies have evaluated the effectiveness of IC or any manual therapy methods for the treatment of post-needling soreness. The aims of this study were: (a) to evaluate the effectiveness of IC on reducing post-needling soreness after dry needling of one latent MTrP in the upper trapezius muscle, and (b) to investigate the effect dry needling combined with IC, compared to dry needling alone and dry needling combined with placebo IC will have on cervical range of motion (c) to determine whether psychological factors are predictive of postneedling pain and (d) to analyze if the relationships between psychological variables and postneedling pain varied as a function of postneedling soreness treatment