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DPT 603 Posterior Neck and Back Notes from Class
Terms in this set (23)
What is the leading cause of disability for people less than 45 years of age?
What does the ligamentum flavum do?
Resist separation of laminae
Protect IV discs
Maintain normal curve
Arrest abrupt flexion
Anterior Longitudinal Ligament
Strong, broad ligament along anterior aspect of vertebral bodies
Woven into anterior surface of IV disc
Taut during ext and distraction
Slacks during flex
Posterior Longitudinal Ligament
Along posterior surfaces of vertebral bodies and IV discs
Thickest in thoracic region
Lateral expansions over IV discs are thinner than central portion
Where do disc extrusions happen most commonly?
Yellow elastic collagen fibers
Form posterior wall of vertebral canal
Lamina to lamina
Nuchal line of occiput to CP of C7
Attachment point for many posterior back muscles
This is the continuation of supraspinous
Fibrocartilaginous disc interposed between two vertebral bodies
Creates symphysis joint
What are the three principle functions of the intervertebral discs?
Bind vertebral bodies together
Permit movement within a vertebral segment
Transit loads across segment
What are the two major components of the intervertebral discs?
Annulus Fibrosus = outer ring composed of concentric lamellar of fibrocartilage
Nucleus pulposus = inner mass of collagen fibers and mucoprotein gel
What are the functions of the annulus fibrosus?
Containment of nucleus pulposus
Inserts into rims on the body
Stabilization of vertebral segment via attachment to cartilaginous end plates
Permission of movement
There is no disc between?
What are the functions of the nucleus pulposus?
Take in fluids/nutrition
Transmission of force and equalization of stress
There is no ____ ___ ___ to the nucleus pulposus.
Direct blood flow (combinations of loading and unloading the spine)
The movement of the spine is limited by?
The IV discs and thickness, facet joint orientation, resistance of ligaments and muscles, tension at articular capsule
What is the movement of the spine influenced?
Back and abdominal muscles, gravity
The articular capsule is ______ in the cervical region.
IV discs are ______ in the cervical region.
Movements of the cervical spine
Flex, ext, lat flex, rot
What are the three parts of the intrinsic back musculature minor deep layer?
What are the two parts of the interspinales and their action?
Extension, rotation of vertebral column
what are the two parts of the intertransversarii and their actions?
Unilaterally = lat bend of vertebral column
(B) = stabilize vertebral column
What does the levator costarum do?
Elevates ribs, assist with inspirations and lateral bending of vertebral column
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