IV discs Flashcards
What type of joint exists between vertebral bodies?
Symphysis (cartilagenous)
2 parts of IV disc
Annulus fibrosis (outer fibrous part) Nucleus pulposus (gelatinous central mass)
How many IV discs in body
23
How many layers of fibrocartilage in annulus fibrosis
Approx 20
What separates disc from bone?
Thin hyaline cartilage layer
4 stages of herniated disc?
Protuding
Prolapsed
Extruded
Sequestered
Describe neurovasculare of IV disc
Only outer 1/3 has vascular/ neural supply
What happens to IV discs as you age?
Nucleus pulposus dries out, loose weight, not as relient/ shock absorbign
Posh name for facet joints?
Zygapophysial joints
Where are facet joints found?
Between inferior and superior articular processes of adjacent vertebrae
Where is the anterior longitudinal ligament found?
Covers and connects anterolateral aspects of vertebral bodies and IV discs
Extends from pelvic surface of sacrum to C1
Function of anterior longitudinal ligament?
Maintains stability of IV joints, limiting extension of vertebral column
Where does posterior longitudinal ligament run?
Within vertebral canal on posterior aspect– attached mainly to IV discs
Function of posterior longitudinal ligament
Prevent hyperflexion
Which is thicker of posterior and anterior longitudinal band?
Anterior
