threshold (HPPT) ultrasound therapy applied to the trigger points and dry needling (DN) in
myofascial pain syndrome. Design Sixty-one patients were randomly assigned to an HPPT
(n= 30) and dry needling (n= 31) groups. The primary outcome measures were the Visual
Analog Scale (VAS) and Neck Pain and Disability Scale (NPDS), both at 1 week and 4
weeks after treatment. The secondary outcome measures were the number of painful trigger …