title: High-power pain threshold ultrasound technique in the treatment of active myofascial trigger points: a randomized, double-blind, case-control study.
abstract: OBJECTIVE
  To study what effects a high-power, pain-threshold, static ultrasound technique applied to acute myofascial trigger points of the upper trapezius has on pain and on active cervical lateral bending.
  
  
  METHODS
  Double-blind randomized trial.
  
  
  METHODS
  Physical therapy unit of a private general hospital.
  
  
  METHODS
  Seventy-two adults with acute pain on 1 side of the neck, admitted to the outpatient unit during 1999 and 2000.
  
  
  METHODS
  Not applicable.
  
  
  METHODS
  Visual analog scale and goniometric measurement of active lateral bending of the neck performed daily after treatment sessions and length of treatment (number of therapy sessions).
  
  
  RESULTS
  High-power ultrasound applied to the trigger points before stretching the muscle was more effective (P<.05) than conventional ultrasound, and it also significantly (P<.001) decreased the length of therapy.
  
  
  CONCLUSIONS
  High-power, pain-threshold, static ultrasound technique may be considered in the treatment of patients with acute myofascial pain syndrome, with the understanding that this technique demands more concentration and communication between the patient and the therapist.
authors.affiliation: Istanbul Hospital, Department of Physical Medicine and Rehabilitation, Cerrahpasa Medical Faculty, Istanbul University, Istanbul, Turkey.
authors.forename: Javid
authors.initials: J
authors.lastname: Majlesi
authors.forename: Halil
authors.initials: H
authors.lastname: Unalan
mesh_terms: D000328:Adult; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D008297:Male; D009209:Myofascial Pain Syndromes / Q000503:physiopathology / Q000628:therapy*; D010147:Pain Measurement; D017288:Pain Threshold; D016059:Range of Motion, Articular; D012785:Shoulder Joint / Q000503:physiopathology; D016896:Treatment Outcome; D014464:Ultrasonic Therapy / Q000379:methods*