• Halil Unalan, Javid Majlesi, Filiz Yildiz Aydin, and Deniz Palamar.
• Department of Physical Medicine and Rehabilitation, Cerrahpasa Medical Faculty, Istanbul University, Turkey.
• Arch Phys Med Rehabil. 2011 Apr 1;92(4):657-62.

ObjectiveTo compare the effects of high-power pain threshold ultrasound (HPPTUS) therapy and local anesthetic injection on pain and active cervical lateral bending in patients with active myofascial trigger points (MTrPs) of the upper trapezius muscle.DesignRandomized single-blinded controlled trial.SettingPhysical medicine and rehabilitation department of university hospital.ParticipantsSubjects (N=49) who had active MTrPs of the upper trapezius muscle.InterventionsHPPTUS or trigger point injection (TrP).Main Outcome MeasuresVisual analog scale, range of motion (ROM) of the cervical spine, and total length of treatments.ResultsAll patients in both groups improved significantly in terms of pain and ROM, but there was no statistically significant difference between groups. Mean numbers of therapy sessions were 1 and 1.5 in the local injection and HPPTUS groups, respectively.ConclusionsWe failed to show differences between the HPPTUS technique and TrP injection in the treatment of active MTrPs of the upper trapezius muscle. The HPPTUS technique can be used as an effective alternative to TrP injection in the treatment of myofascial pain syndrome.Copyright © 2011 American Congress of Rehabilitation Medicine. Published by Elsevier Inc. All rights reserved.

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