The Effect of Therapeutic Low-Frequency Ultrasound applied to Myofascial Trigger Points: A Pilot Pre-Post Design Study

Michal Elboim Gabyzon, Amit Drat, Leonid Kalichman

Research output: Contribution to journalArticlepeer-review


Ultrasound at a frequency of 1 or 3 MHz is frequently used to treat various musculoskeletal conditions, but research on ultrasound operating at 38-50 kHz frequencies (US-KHz) is lacking. Study aimed to evaluate the short-term effect of US-KHz on pain pressure threshold (PPT), ankle dorsiflexion range of motion (ROM), and motor performance (the Side Hop Test) in subjects with a myofascial trigger point (TrP) in the calf muscle. US-KHz was applied to the area of the palpable TrP in the calf muscle for 10 minutes (continuous pulse, transducer head size 19.6 cm2, power 0.75-1.25 w/cm2) in twenty volunteers (18-45 years old). Significant improvements (p
Original languageEnglish
Pages (from-to)242-249
Number of pages8
JournalSciMedicine Journal
Issue number3
StatePublished - 1 Sep 2021


  • Therapeutic Ultrasound
  • Kilo-Herz Frequency
  • Trigger points
  • Feasibility study
  • Calf Muscles

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