Your sternocleidomastoid (SCM) muscle is a powerful neck muscle that allows you to bend your neck and turn or tilt your head. Injuries and tension within your SCM can lead to pain and stiffness.

The sternocleidomastoid muscle is one of the largest and most superficial cervical muscles. The primary actions of the muscle are rotation of the head to the opposite side and flexion of the neck. [3]

Oct 30, 2023 · This article describes the anatomy of the sternocleidomastoid muscle, its origins, insertions, and functions. Learn this topic now at Kenhub!

Sternocleidomastoid (SCM) (synonym musculus sternocleidomastoideus) is a paired superficial muscle in the anterior portion of the neck. The sternocleidomastoid muscle (SCM) is an important landmark …

Oct 19, 2025 · The sternocleidomastoid muscles run along the sides of your neck and help you turn and tilt your head. You can help ease discomfort with expert-backed strategies, exercises, and other …

Nov 6, 2025 · The sternocleidomastoid is a muscle of the anterolateral aspect of the neck. It originates from the mastoid process of the temporal bone and the superior nuchal line of the occipital bone.

May 22, 2024 · Located on either side of your neck, the SCM joins three body parts: your chest, clavicle, and breastbone—hence the long name. Each SCM muscle is two-pronged, with two origin points …

Apr 4, 2023 · It is a superficially palpable muscle with importance as an anatomical landmark within the neck region and as part of neuromuscular pathologies such as torticollis.

Jun 23, 2025 · The sternocleidomastoid (SCM) muscle is a powerful and long two-headed neck muscle that allows you to bend your neck and turn or tilt your head. It is the largest and most superficial …

Jul 27, 2020 · Sternocleidomastoid (SCM) muscle pain in the neck typically results from muscle tension or performing repeated motions. It can also occur with certain health conditions, such as asthma and...