Effects of the high-power pain threshold ultrasound technique in the elderly with latent myofascial trigger points: A double-blind randomized study

Yushin Kim, Hong Ryeol Yang, Jae Woo Lee, Bum Chul Yoon

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Background and objective: The high-power pain threshold ultrasound (HPPTUS) technique has been introduced as a novel treatment method in patients with myofascial trigger points (MTrPs). The aim of the current study was to compare the therapeutic effects of HPPTUS with those of the conventional ultrasound technique in elderly patients with latent MTrPs on the upper trapezius muscles of at least 1 side. Material and Methods: Forty-one participants received 8 treatment sessions with conventional ultrasound (n=19) or with the HPPTUS technique (n=22) for 4 consecutive weeks. Outcome variables included visual analog scale (VAS) scores, pressure pain threshold (PPT), and range of motion (ROM). The data were analyzed using repeated analysis of variance (ANOVA) measurements. Results: The VAS scores recorded 1, 2, 3, and 4 weeks after HPPTUS were significantly lower than the baseline scores in both groups. The ROM (after 3 and 4 weeks) and PPT (after 4 weeks) values also significantly increased from their baseline values in both groups. On comparing the techniques, there were no significant differences in the VAS (p=0.296), PPT (p=0.768), and ROM (p=0.822) values, although both techniques showed therapeutic effects for 4 weeks (p < 0.001). Conclusion: The results indicate that the HPPTUS technique in same manner as treatment of active MTrPs is not superior to the conventional ultrasound technique in the treatment of the elderly patients with the latent MTrPs.

Original languageEnglish
Pages (from-to)17-23
Number of pages7
JournalJournal of Back and Musculoskeletal Rehabilitation
Volume27
Issue number1
DOIs
Publication statusPublished - 2014 Feb 17

Keywords

  • Aged
  • high-power pain threshold
  • interventional ultrasound
  • myofascial pain syndromes
  • trigger points

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Physical Therapy, Sports Therapy and Rehabilitation
  • Rehabilitation

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