The phenomenon of adolescents as “smartphone neck” users is becoming increasingly common, referring to the long-term habit of looking down at smartphones, tablets, computers, and other electronic devices. This poor posture has a significant impact on cervical spine health and can even lead to cervical spine disorders. The details are as follows:
1. Effects of Looking Down on the Cervical Spine
Increased cervical load: Normally, the head weighs about 4–5 kg. When tilting the head, the pressure on the cervical spine increases exponentially. At 30°, it is about 12 kg; at 45°, it reaches 22 kg, far exceeding the cervical spine’s tolerance.
Changes in cervical curvature: Prolonged downward posture can reduce the natural cervical lordosis or even reverse it, which may be an early sign of cervical spine disease.
Muscle and ligament tension: Neck and shoulder muscles remain tense for long periods, causing stiffness, soreness, and reduced blood circulation.
2. Common Cervical Spine Disorders
Loss of cervical lordosis or reversed curvature: Abnormal curvature can lead to neck pain and limited mobility over time.
Cervical disc herniation: Chronic pressure may damage intervertebral discs, causing neck and shoulder pain, or even numbness in the arms.
Early cervical degeneration: Problems may begin in adolescence, laying the foundation for adult cervical spine diseases.
3. Prevention and Improvement Tips
Control device use time: Take a break or move around every 30–40 minutes to avoid prolonged downward posture.
Maintain correct posture: Keep electronic devices at eye level to reduce neck tilt.
Strengthen neck exercises: Include neck rotations, shoulder stretches, and upper back extensions.
Pay attention to sleep posture: Use a pillow of appropriate height to maintain natural cervical curvature.
Regular check-ups: If experiencing neck pain, numbness, or stiffness, seek medical advice promptly for early intervention.
In summary, long-term smartphone or device use among adolescents poses a serious risk to cervical spine health. Scientific device use, proper posture, and regular neck and shoulder exercises are key to protecting the cervical spine.
