The C1-C2 motion segment accounts for 50% of the rotation in the cervical spine. These movements occur on atlantoaxial joint. Rotation and lateral flexion between the occiput and atlas are not possible due to the depth of the atlantal sockets. Normal flexion to hyperextension at the atlanto-occipital joint range is 15 to 20 degrees. The first cervical vertebra, the atlas, articulates with the occipital condyles, and its primary motions are flexion and extension. Flexion and Extension Movements of Cervical Spine Normal Kinematics of the Upper Cervical Spineīoth flexion and extension movements are reported to be initiated is also initiated in the lower cervical spine. In normal daily use, the movements are hardly uniplanar as outlined above. Rotation – 90° of rotation to both sides.Lateral flexion – 20 to 45 degrees on both sides.Rotation is the movement which we use to look over our shoulder or look back. This movement allows you to tilt your neck as if touch ear to your shoulder. These areĪ movement by which chin attempts to touch the chest.Ī movement in the opposite direction of flexion There are six movements possible in the normal range of motion of the cervical spine. Normal Kinematics of the Upper Cervical SpineĬervical spine movements are complex and result of individual vertebral motion.
0 kommentar(er)
