Spine Ligaments Flashcards
Anterior longitudinal ligament function
Limits extension
Reinforces anterolateral portion of annulus fibrosis and anterior aspect of IV joints
Anterior longitudinal ligament region
C2 to sacrum. Well developed in cervical, lower thoracic, and lumbar regions
Anterior atlantoaxial ligament function
Limits extension. Continuation of the anterior longitudinal ligament
Anterior atlantoaxial ligament region
C2 to occipital bone
Posterior longitudinal ligament function
Limits forward flexion
Reinforces posterior portion of anulus fibrosis
Posterior longitudinal ligament region
C2 to sacrum. Broad in cervical and thoracic region and narrow in lumbar region.
Tectorial membrane function
Limits forward flexion. Continuation of posterior longitudinal ligament.
Tectorial membrane region
C2 to occipital bone
Ligamentum flavum function
Limits forward flexion esp in lumbar area where it resists separation of laminate
Ligamentum flavum region
C2 to sacrum. Thin, broad, and long in cervical and thoracic region and thickest in lumbar region
Posterior atlantoaxial ligament function
Limits flexion. Continuation of the Ligamentum flavum
Posterior atlantoaxial ligament region
C1 to C12
Supraspinous ligaments function
Limits forward flexion
Supraspinous ligaments region
C7-L3/L4. Weak in lumbar region
Ligamentum nuchae function
Limits forward flexion
Ligamentum nuchae region
Occipital protuberance to C7
Interspinous ligaments function
Limits forward flexion
Interspinous ligaments region
Primarily in lumbar region
Intertransverse ligaments function
Limit contralaterally lateral flexion
Inter transverse ligaments region
Primarily in lumbar region
Alar ligaments function
Limit rotation of the head to ipsilaterally side and lateral flexion to the contralaterally side
Alar ligaments region
C1 and C2
Iliolumbar ligament function
Resists anterior sliding of L5 and S1
Iliolumbar ligament region
Lower lumbar region
Zygapophyseal joint capsules function
Resists forward flexion and axial rotation
Zygapophyseal joint capsules region
Strongest at cervicothoracic junction and in the thoracolumbar region
Annulus fibrosis function
Resists distraction, translation, and rotation of vertebral bodies