Participants in the McKenzie exercise for neck group will receive a six-week exercise program that includes the McKenzie exercise protocol for neck pain. The program will consist of three 30-45 minute sessions per week, for a total of 18 sessions over six weeks. The exercises will be performed under the supervision of a physiotherapist in the outpatient clinic. The McKenzie exercise protocol for neck pain involves a series of movements that aim to reduce pain and improve range of motion in the cervical spine. The exercises are tailored to each participant's individual needs and may include sustained postures, repeated movements, and mobilization techniques. Participants will be instructed to perform the exercises at home as well, as part of a home exercise program, to ensure that they are performing the exercises correctly and consistently. Participants in this group will not receive any additional stabilization exercises.

Participants in the McKenzie exercises for neck with cervical and scapulothoracic stabilization exercises group will receive a six-week exercise program that includes the McKenzie exercise protocol for neck pain and cervical and scapulothoracic stabilization exercises, performed under the supervision of a physiotherapist in the outpatient clinic. The program consists of three 30-45 minute sessions per week for a total of 18 sessions over six weeks. Participants will perform the McKenzie exercise protocol for neck pain first, followed by cervical and scapulothoracic stabilization exercises. Stabilization exercises aim to improve strength, endurance, and neuromuscular control of the cervical and scapulothoracic muscles. Participants will be instructed to perform the exercises at home as part of a home exercise program to ensure proper technique and consistency. This group receives both the McKenzie exercise protocol for neck pain and cervical and scapulothoracic stabilization exercises.

The McKenzie protocol will be used to manage extension, rotation, and lateral flexion dysfunctions in patients with non-specific neck pain. An experienced physical therapist will perform the protocol 3 times a week for 6 weeks, tailoring exercises to each patient's individual needs based on limited and painful directions of movement. Exercises include retraction, extension, rotation, lateral flexion, and overpressure techniques. Patients will receive education on posture and body mechanics, and exercises will be progressed over time as the patient improves.

The primary outcome measure will be pain intensity, assessed using the Numeric Pain Rating Scale (NPRS). The intervention will consist of a 4-week program of cervical and scapulothoracic stabilization exercises, performed 3 times a week under the supervision of an experienced physical therapist. Pain intensity will be measured at baseline and 6 weeks after the end of the treatment program.

The Neck Disability Index (NDI) is a standardized questionnaire that assesses the degree of disability related to neck pain. It consists of 10 questions that evaluate the impact of neck pain on daily activities, such as personal care, lifting, reading, driving, and sleeping. Each question is rated on a scale from 0 to 5, with a total score ranging from 0 to 50. Higher scores indicate greater disability related to neck pain. The NDI is a widely used and validated tool for measuring neck pain-related disability and has been shown to be responsive to changes in disability over time. It is a recommended outcome measure in clinical trials and practice guidelines for patients with neck pain.