The SCM is part of a group of muscles known as the anteriolateral neck flexors. The other muscles in the anteriolateral neck flexor group are the scalenes , which are located more deeply in the neck than the SCM.
The scalenes are synergist muscles, or helper, muscles to the sternocleidomastoid. They assist the SCM in turning and tilting both the head and neck. The SCM becomes chronically shortened in cases of torticollis. Torticollis is a condition in which the head is persistently turned to one side. It may occur in babies during early positioning. Treatment involves gentle stretching of a tight SCM muscle to lengthen it to normal shape. Any impairment or injury to the spinal accessory nerve, or cranial nerve XI, can cause weakness or paralysis to the SCM.
This will cause notable atrophy in the affected SCM and may cause difficulty in turning your head and bending your neck. Treatment for this involves regaining normal function of the nerve and strengthening exercises for the SCM muscle. If you have a weakened SCM muscle, it is important to visit your healthcare provider. He or she can perform tests to ensure that you get an accurate diagnosis and start treatment right away.
Working with a physical therapist can be a useful modality to rehab the SCM. Exercises for the SCM may include:. By working to keep good posture and to gently stretch and strengthen the SCM and other muscles around your neck, you can be sure to quickly recover full pain-free function.
Sign up for our Health Tip of the Day newsletter, and receive daily tips that will help you live your healthiest life. Missaghi B. Sternocleidomastoid syndrome: a case study. J Can Chiropr Assoc. MedlinePlus , U. National Library of Medicine. Updated April 30, Your Privacy Rights. To change or withdraw your consent choices for VerywellHealth. View revision history Report problem with Article. Citation, DOI and article data.
Sternocleidomastoid muscle. Reference article, Radiopaedia. URL of Article. On this page:. Quiz questions. Atlas of skeletal muscles. Work toward better posture with these seven stretches each morning. Open up your body to a taller you…. Here is how to help fix the…. Wry neck torticollis is a tilted and twisted neck that can be congenital or result from muscle injury, swollen lymph nodes, ear infection, or other…. A recessed maxilla can cause cosmetic issues like flat cheekbones and a prominent jaw, and lead to dental problems, speech issues, and obstructed….
If you do tear a meniscus, you might be tempted to "walk it off. A lateral pelvic tilt is when one hip is higher than the other. Learn about five exercises that can help with this condition. Health Conditions Discover Plan Connect. Medically reviewed by Angela M. Causes Symptoms Exercises Treatment Takeaway. What is the SCM muscle? Sternocleidomastoid pain causes. Sternocleidomastoid pain symptoms.
Sternocleidomastoid pain exercises and stretches. Small adjustments to relieve sternocleidomastoid pain. The takeaway.
Learn Muscle Anatomy: Sternocleidomastoid. Actions of the Sternocleidomastoid The SCM's main responsibility is moving the vertebral column and head. Sternocleidomastoid Injuries Since the SCM is involved in so many actions, it stands to reason that it would be just as susceptible to injury.
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Lateral surface of mastoid process. Nuchal line of occipital bone.
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