Ligaments Flashcards
(27 cards)
What is the function of the anterior longitudinal ligament?
it breaks or limits doors-flexion or hypertension of the vertebral column
What was ossification of the anterior longitudinal ligament in the lumbar region identified as?
Forestier’s Disease
What is ossification of the anterior longitudinal ligament in the lumbar region now identified as?
Diffuse Idiopathic Skeletal Hyperostosis or DISH
What is the innermost layer of the posterior longitudinal ligament called?
the perivertebral ligament
What is the function of the posterior longitudinal ligament?
it brakes or limits flexion of the vertebral column
Where is ossification of the posterior longitudinal ligament most commonly identified?
the cervical spine with an 80% incidence
What is the clinical sign of posterior longitudinal ligament ossification in the cervical spine?
a loss of hand and finger dexterity
What is the clinical sign of posterior longitudinal ligament ossification in the lumbar spine?
faltering gait
What is the gender, age, and ethnic bias associated with ossification of the posterior longitudinal ligament?
greater in males over 50 and has a higher incidence in the Japanese
In which region of the spine will the ligamentum flavum be paired?
the lumbar spine
What is the name given to the ligamentum flavum based on appearance and histology?
it is a yellow elastic ligament
What is now thought to be a major function of the ligamentum flavum?
it is an early prime factor in extension of the vertebral column
Where is ossification of the ligamentum flavum most commonly identified?
the thoracic spine or thoracolumbar transition zone
What regions of the vertebral column demonstrate the greatest laxity of capsular ligaments?
the cervical and lumbar regions
If the zygapophyseal capsular ligament is not significantly involved in restricting motion what is its’ function?
probably involved in proprioceptive feedback to the muscles stabilizing the vertebral couple during movement
What is now thought to be a major function of the interspinous ligament?
it is more likely a proprioceptive transducer for the spinal reflex
What are the names given to the superficial and deep layers of the ligamentum nuchae, respectively?
funicular layer and lamellar layer
What are the attachment sites for the superficial layer of the ligamentum nuchae?
the external occipital protuberance, external occipital crest, and spinous tubercle of C7
What is the histological make-up of the human ligamentum nuchae?
it is a yellow elastic ligament, but has more collagen fibers that in quadrupeds
What its he primary yellow elastic or elastic ligament of the spine?
ligamentum flavum
What is the classic function of the human ligamentum nuchae?
it brakes or limits flexion of the cervical spine
What is the termination level inferiorly for the supraspinous ligament according to current literature?
primarily at L4 (73%); between L4 and L5 (5%)
Where is the supraspinous ligament said to be best developed?
in the lumbar spine
What is now thought to be a major function of the supraspinous ligament?
it is a proprioceptive transducer for the spinal reflex
