Ultrasound Therapy(UST): Indication, Contra-indication, & Dangers

Ultrasound Therapy:

ultrasound-therapy-chiropractorUltrasound therapy is considered as a deep heating modality. It is a form of acoustic propagated in the form of longitudinal compression wave at the frequency for high to be heard by human ear.

Soundwave from 20Hz to 2000Hz are within the audible range are called the ultrasonic wave.

Wave length:  0.15cm

Frequency:      1mHz or 3mHz


  1. Low intensity- 0.3watt/cm²
  2. Medium intensity- 0.3-1.2watt/cm²
  3. High intensity- 1.2-3watt/cm²

Indication of UST

  •  Ultrasound Therapy IndicationAdhesion formation
  • Pain and muscle spasm
  • Haematoma
  • Capsulitis
  • Joint stiffness
  • Scar tissue
  • Calcified tendinitis
  • Swelling


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Contraindication of UST

  • Tuberculosis of lungs or bone
  • Tumor
  • Pregnant uterus
  • Deep vein thrombosis
  • Anesthetic area
  • Haemophilia
  • Reproductive organ
  • Acute infection
  • Brain and spinal cord

Physiological effect of UST

Ultrasound Therapy

  1. Mechanical effect-
  •  Lossing the tissue by doing micro-massage.
  •   Vasodilation.
  1. Thermal effect-
  • Vasodilation
  • Increase venous drainage
  • Wash out pain creatic substance.
  1. Biological effect-
  •  Blood circulation
  •  Membrane permeability
  •  Muscle relaxation
  •  Normalization of muscle and bone.

Danger of UST

  •  Erythema
  •  Burn
  •  Cavitation
  •  Over dosages
  •  Damage of apparatus.