this study will be conducted to investigate the effect of Extracorporeal Shockwave Therapy on Ultrasonography Changes of Upper Trapezius Myofascial Trigger Points in Patients With Non Specific Neck Pain

Neck pain is one of the most commonly reported musculoskeletal disorders. The prevalence for neck pain varies between 16.7% and 75.1% in the general population. Up to 67% of world's population may present chronic non-specific neck pain at least once in their lives. The upper trapezius is probably the muscle most often beset by trigger points, it is indicated that the upper trapezius is the most sensitive of 8 different muscles (upper trapezius, pectoralis major, levator scapulae, teres major, supraspinatus, gluteus medius, infraspinatus, paraspinal) to the pressure of an algometer.Recently, the extracorporeal shock wave has been widely known to be an effective therapeutic modality in myofascial pain syndrome treatment and a systematic review provided promising insight into the effectiveness of ESWT in Myofascial pain syndrome treatment. sixty patients with non specific neck pain will be assigned randomly to two groups; first one will receive shock wave therapy and traditional therapy and the second one will receive traditional therapy only for six weeks.

Inclusion Criteria:

• Sixty patients receiving a diagnosis of non-specific neck pain with upper trapezius myofascial trigger points by an orthopaedist physician.
• Body mass index of participants was normal less than (30 kg/m2)(Al-asadi, 2018).
• Age over 18 years.
• Presence of taught band.
• Presence of hyper irritable spot in a taught band, and reproduction of the typical referred pain pattern of the myofascial trigger point in response to compression

Exclusion Criteria:

• Having signs and symptoms of neurological disorders that cause nerve root compression.
• Headache as a consequence of specific headache diagnosis.
• Having a history of specific signs of malignancy, or infection.
• Having a history of trauma with or without proven structural disorders in the region of the neck, shoulder, and head (e.g. whiplash).
• Having signs and symptoms of cerebrovascular insufficiency.
• Having a severe chronic disease of the locomotor system (e.g. polyarthritis, muscular disease
• Any participant with contraindications to shock wave therapy

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