RCT of Addition of 3D Posture Corrective Orthosis to A Multimodal Program of Treatment Of Chronic Postural Neck Pain.

Inclusion Criteria: * Male and female subjects with age from 17-40 years old. * Neck pain with equal or greater than 3/10 on a The Numeric Pain Rating Scale (NPRS) and the pain lasted more than 3 months (chronic neck pain). * Participants with neck disability at least score on neck disability index (NDI) was 5 from the total score 50. * Participants were included if they had posture deviations by screening test using GPS * Posture displacements: 1. An anterior head translation more than 2.5 cm. 2. Side shifting of the head in related to thoracic more than .5 cm. Posture rotations: 1. Rotation of head more than or equal three degrees. 2. Side bending of the head more than or equal three degrees. 3. Flexion or extension position of the head, normal angle 18 degrees, if more than that degree, it is meaning extension in upper cervical and if less means flexion in upper cervical. Participants included if they had at least two posture deviations whatever displacements or rotations. We included more obvious degrees or displacement of head posture related to thoracic to avoid variability of measurement between people and the posture deviations could be appeared and examined by visual examination. * If subjects could be able to continue treatment for 10 weeks then for 3 months of follow up. * If Participants accepted and signed an informed consent form. Exclusion Criteria: • If Participant reported any of the following conditions: Neck pain associated with whiplash injuries, medical red flag history(such as a tumor, fracture, metabolic diseases, rheumatoid arthritis, and osteoporosis). * Neck pain with cervical radiculopathy, neck pain associated with externalized cervical disc herniation. * Fibromyalgia syndrome, to avoid the similarity of fibromyalgia with an NP diagnosis, a physician used the criteria for the clinical diagnosis of fibromyalgia according to the American College of Rheumatology. * If the patient made surgery in the neck area before whatever the cause of operation. * Neck pain accompanied by vertigo caused by vertebrobasilar insufficiency or accompanied by non-cervicogenic headaches. * People were excluded if they were undergoing any type of pain treatment they have psychiatric disorders or other problems that contraindicate the use of the techniques in this study. * If Participants reported any of the following conditions: (1) a history of cervical or facial trauma or surgery. (2) Congenital anomalies involving the spine (cervical, thoracic, lumba…