Inclusion criteria:
1) patients with unilateral chronic cervical rediculopathy, both male and female, age between 25-60 years old, with involvement in lower cervical vertebrae. 2) Patients with unilateral chronic radicular neck pain, that physician have confirmed this disorder by clinical examination, MRI imaging and electrodiagnostic tests. 3) patients with unilateral chronic radicular neck pain that they have been at least 3 months of the onset of symptoms. 4) the intensity of pain in the neck and arm regions is between 3 to 7 of visual analogue scale pain score, and with at least one of the following; pain aggravated by neck movements, changes in sensory, motor weakness, loss of deep tendon reflexes. 5) patients who have a desire to participate in the study.
Exclusion criteria:
1) chronic non-specific neck pain and Whiplash. 2) bilateral cervical radiculopathy. 3) previous surgery of cervical or thoracic spine. 4) patients with myelopathy, peripheral neuropathy, damage to the shoulder joint and Thoracic Outlet Syndrome. 5) evidence of involvement of the central nervous system such as Hoffman sign, Babinski, clonus. 6) pain in the neck region due to arthritis, cancer and immune system such as rheumatoid arthritis. 7) presence of congenital abnormalities in the spine known as scoliosis, torticollis in childhood. 8) postural abnormalities of spine such as Forward Head Posture, hyperkyphosis. 9) Compression fracture caused by osteoporosis, stenosis and spondylolysis or spondylolisthesis. 10) having systemic diseases or general health problems such as pulmonary diseases, myopathy, fibromyalgia, cancer, spinal tuberculosis. 11) wounds in neck region. 12) primarily temporomandibular disorders. 13) visual and hearing impairments. 14) Pregnancy. 15) specific treatment for neck and shoulder during the last 3 months.