Muscle Actions Of The Cervical Spine Optimal muscle lengths and recruitment patterns are important to the efficiency of cervical motions to permit the best ratio of coupled motion to happen. The muscles of the cervical region may be categorized into two distinct teams in response to the relationship of the attachment of the muscle to the axis of movement of the cervical spine. The intrinsic muscles of the cervical spine situated close to the axis of motion are felt to manage precise control of movement during motion. The extrinsic muscles of the cervical spine are situated farther from the axis of motion and provide power to the movement however not necessarily precision of motion. A stability of participation between these two groups is crucial for precise and pain-free motion of the cervical spine.


Cervical Flexors
The function of the intrinsic cervical flexors is to supply forward sagittal plan rotation or ‘rolling’ of the cervical vertebrae. The muscles producing the sagittal rotation movement in the higher cervical region are the rectus capitis anterior and rectus capitis lateralis.

In the lower cervical area, forward sagittal rotation is produced by the longus capitis and longus coli. The longus capitis and longus coli are also energetic in protecting the anterior constructions throughout forceful extension motions.

The perform of the extrinsic cervical flexors is to add power to the flexion movement and produce flexion motion related to forward translation of the cervical vertebrae. The muscles contributing to the ahead translator movement in the cervical area are the sternocleidomastoids and the anterior and medial scalenes. Generally, these muscles are dominant throughout flexion movements. ストレートネック 整体 of the extrinsic muscles can result in a faulty movement pattern of anterior translation of the pinnacle and cervical spine with diminished anterior sagittal plane rotation.


Cervical Extensors
The operate of the intrinsic cervical extensors is to supply sagittal rotation or backward ‘rolling’ of the cervical vertebrae. The muscles attributed to producing the posterior sagittal rotation in the higher cervical region are the rectus capitis posterior major and minor, the oblique capitis inferior and superior, and the semispinalis capitis,the spelnius capitis, and the longissimus capitis.

The muscles in the lower cervical area that produce posterior sagittal rotation are the semispinalis cervicis, the splenius cervicis, and the longissimus cervicis.

The operate of the extrinsic cervical extensors is to supply extension with posterior translation of the cervical vertebrae. The muscles attributed to producing this posterior translator motion in the cervical region are the upper trapezius and levator scapulae. A common defective recruitment sample can embrace better recruitment of the extrinsic cervical extensors throughout cervical extension, and might be finest noticed in the prone or quadruped position.