Neck pain is a common musculoskeletal disorder. Mechanical neck pain is also known as non-specific neck pain and is defined as the pain anywhere within the region bounded superiorly by superior nuchal line, inferiorly by an imaginary line through the tip of first thoracic spinous process and laterally by sagittal plane tangential to the lateral borders of the neck in which pain is provoked by sustained neck posture, neck movement, pain on palpation of cervical musculature without pathologies. In most patients, neck pain can be a common cause of disability: it is associated with daily activity limitations, reduction of work productivity and decrease in quality of life. Mechanical neck pain is commonly seen in people involved in occupation like computer processing, clerical job, students and people with sedentary life style awkward occupational posture, heavy lifting and physically demanding work.~thoracic spine manipulation (TSM) is defined as a high-velocity/low amplitude movement or thrust directed at any segment of the thoracic spine.~Muscle energy technique (MET) is a method of treatment that involves the voluntary contraction of subject's muscles in a precisely controlled direction, against a counterforce and producing post isometric relaxation through the influence of the Golgi tendon. MET is used to decrease pain, stretch tight structures muscle and fascia, reduce muscle tone, improve local circulation, and mobilize joint restriction
To compare the effects of Thoracic manipulation and MET in relieving pain.in improving Range of motion and in improving functional disability.