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Painful Muscular Condition Responds to Noninvasive Ultrasound Treatment


This study involved 102 patients who had trigger points on one side of the upper trapezius. The individuals' pain had lasted from six months to seven years. The subjects were grouped randomly to receive ultrasound with neck-stretching exercises, trigger point injections with neck-stretching exercises, or neck-stretching exercises only. The average age of the 38 men and 64 women was 31 years. Pain intensity was assessed by patients describing their pain on a scale of 0 to 10. The investigators also measured the time at which a patient reported discomfort when pressure was applied to the painful area (the pain threshold, or PT).

Compared with controls, both treatment groups had a statistically significant reduction in pain intensity, and an increase in both PT and range of motion at two-week and three-month follow-up assessments after treatment. Controls showed no improvement; there were no differences between the ultrasound and the trigger point injection groups.

Depression and anxiety were both relatively high among all subjects, with 22.9% of patients having high depression scores and 89.3% having high anxiety scores. Although these scores were not correlated to either pain intensity or PT, they were correlated to the duration of pain prior to treatment.

Vital Information:

  • Myofascial pain is a chronic condition that affects the connective tissue covering muscles.
  • Ultrasound is just as effective a treatment as trigger point injections and should be offered as an alternative since it is a less invasive procedure.
  • Psychological and social factors may play a role in chronic myofascial pain, so patients should be assessed and treated for any contributing factors.

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