The purpose of this study is to investigate the sagittal thoracic spinal curvature and mobility in subjects with and without chronic neck pain, cut-off points and pain relationship

Inclusion Criteria:

• Patients aged between 18 and 65 years with persistent neck pain for more than 3 months
• The inclusion criteria for the control group included acceptance to participate in the study, no previous neck pain (lifetime-to-date), no spinal surgery or deformity, and no radiological abnormalities detected

Exclusion Criteria:

• Prior history of injury or surgery relating to spine, spinal deformity, neurological symptoms or signs, radiological abnormalities indicating cervical radiculopathy or myelopathy, prior history of other spinal disorder such as low back pain, active intervention in the last 3 months including drug therapy or physiotherapy, malignancy, systemic pathology including any rheumatologic disease and osteoporosis

Patients with Chronic neck pain and heatlhy subjects