title: [Application of shear wave elastography in the evaluation of neck-shoulder myofascial pain syndrome].
abstract: OBJECTIVE
  To study clinical value of shear wave elastography (SWE) in the evaluation of neck-shoulder myofascial pain syndrome.
  
  
  METHODS
  From December 2013 to July 2014,30 patients diagnosed as neck-shoulder myofascial pain syndrome were in the treatment group,including 17 males and 13 females, with an average age of (44 ± 3) years old. Thirty healthy people were in the control group, including 22 males and 8 females, with a mean age of (37 ± 5) years old. The patients in the treatment group were treated with manipulation, once every other day, total 7 times. The SWE was used to detect tension part of trapezius muscle of patients in the treatment group before and after treatment, as well as to detect muscle belly at the descending part of trapezius muscle in the control group. The tissue elasticity and Yang's modulus value were recorded and compared.
  
  
  RESULTS
  The tissue elasticity chart of patients in the treatment group before treatment was mainly greenish blue with the score of 3.70 ± 1.53, and the Yang's modulus was (43.4 ± 15.6) kPa. The tissue elasticity figure after treatment was mainly blue with the score of 2.40 ± 0.87, and the Yang's modulus was (29.0 ± 5.9) kPa. Whereas in the control group, the tissue elasticity figure was mainly blue with the score of 1.60 ± 0.72, and the Yang's modulus was (24.0 ± 7.6) kPa. These were statistical differences between the two groups (P = 0.000).
  
  
  CONCLUSIONS
  SWE can be used as an evaluation method of manipulation treatment for neck-shoulder myofascial pain syndrome, which is an objective and sensitive detection method.
authors.forename: Ling
authors.initials: L
authors.lastname: Guo
authors.forename: Chen
authors.initials: C
authors.lastname: Zhang
authors.forename: Ding-ding
authors.initials: DD
authors.lastname: Zhang
authors.forename: Jing-hua
authors.initials: JH
authors.lastname: Gao
authors.forename: Guang-hui
authors.initials: GH
authors.lastname: Liu
authors.forename: Shang-quan
authors.initials: SQ
authors.lastname: Wang
mesh_terms: D000328:Adult; D054459:Elasticity Imaging Techniques / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D026201:Musculoskeletal Manipulations; D009209:Myofascial Pain Syndromes / Q000175:diagnosis* / Q000628:therapy; D009333:Neck; D012782:Shoulder