Vertebral Joints & Biomechanics Vickiey Aspell, Carolyn Eddy, Matt Martin

Joint movement and facets Articulating surfaces for zygapophysial joints Craniovertebral joints

Ligaments Ligaments of the Spine: Anterior Longitudinal Ligament Posterior Longitudinal Ligament Supraspinal Ligament Interspinal Ligaments Ligamenta Flava Intertransverse Ligaments Ligamentum Nuchae Moore, K.L., Agur, A.M.R. and Dalley, A.F. Essential Clinical Anatomy. 5th ed, LWW, 2015.

Splenius Cervicis and Capitis Multifidus and Rotatores Intrinsic Muscles Unilateral contraction rotates to contralateral side assist with local extension and rotatory movements Acting alone: laterally flex neck and rotate head Acting together: extend head and neck Semisplinalis Erector Spinae bilaterally: extend vertebral column and head Acting unilaterally: laterally flex vertebral column Extends head,thoracic, and cervical Rotates contralaterally

Cervical+ Thoracic+Lumbar Movements of the spine Cervical Thoracic Lumbar Cervical+ Thoracic+Lumbar Flexion 65º 35º 50º 150º Extension 40º 25º 100º Lateral Flexion 20º 75º Rotation 5º 90º In your group, you will each analyze the range of motion of each other in your designated region of the spine. Think about what aspects of the spine are limiting the range of motion in that region (ie, muscles, joints, ligaments).

Work cited Dean, N.A. and B.S. Mitchell 2002. Anatomic relation between the nuchal ligament (ligamentum nuchae) and the spinal dura mater in the craniocervical region. Clin. Anat. 15:182-185. Moore, K.L., Agur, A.M.R. and Dalley, A.F. Essential Clinical Anatomy. 5th ed, LWW, 2015.