This study will be conducted to compare between Mckenzie exercises and Maitland cervical mobilization technique in management of non-specific neck pain as regard to neck pain, cervical range of motion, neck function and cervical proprioception.

Neck pain is the second leading cause of disability worldwide among people with musculoskeletal disorders , and neck pain is responsible for a substantial burden to society .

Current guidelines advocate a multimodal approach including different types of exercise and manual therapy for managing non-specific neck pain and there is little evidence of what specific intervention of this multimodal approach is most beneficial. This means that there is a gap in literature regarding this point in general. If effectiveness of each intervention is clear, this will inform selection of individual components of the multimodal approach.

45 Subjects of both genders with a primary complaint of neck pain more than 12 weeks will participate in this study.Group A will receive Mckenzie exercise in the form of repeated movements in the direction of painful & restricted movement .Group B: will receive Maitland's cervical mobilization in the form of posterior-anterior (PA) glide.Group C: will receive only the conventional physical therapy program prescribed in the form of ( hot packs , stretching exercises, isometric strengthening exercises and postural correction exercises).

Inclusion criteria:

• 45 Subjects diagnosed and referred from orthopedist with chronic NSNP.
• All participants will have neck pain with mobility deficit according to ICF classification of neck pain..
• Duration of symptoms is more than 3 months to be chronic.
• Subjects of both genders will be involved in the study.
• Subject are young adult with the age span between 18 &29 years because this period is characterized by extensive changes, handling choices and opportunities such as moving out from home, choice of education and career, and establishing an adult lifestyle.
• All participants will be selected with body mass index (BMI) between 18.5 and 24.9kg/cm2 which is considered the normal range of BMI.

Exclusion criteria:

• History of cervical surgery.
• Whiplash injuries.
• Inflammatory arthropathy.
• Myelopathy.
• If neck pain is associated with radiculopathy.
• Vertebrobasilar insufficiency.
• Red flags suggesting of cancer or infection .
• Fracture.
• Diabetic patients.
• Hypertensive patients.
• Obese subjects.
• Vertigo.
• Thoracic outlet syndrome.