General Spine Anatomy : Joints and ligaments Flashcards
What are the 5 segments of the spinal collum?
Cervical = 7 vertebrae Thoracic = 12 vertebrae Lumbar = 5 vertebrae Sacrum = 1 bone (5 fused vertebrae) Coccyx = 1 bone (4 fused vertebrae)
How are the vertebral discs named?
A disc is named for the 2 vertebrae that it sits between?
Are there fibrocartilaginous discs between all the vertebrae?
No C1/ C2 do not have a disc between them.
What are the 2 components that make up intervertebral discs?
Annulus Fibrosis - fibrous outer layer
Nucleus Pulposus - inner substance of the disc
Which part of the intervertebral discs have innervation and which part doesn’t?
The annulus fibrosis HAS innervation.
The nucleus pulposus DOES NOT have innervation.
What is the fiberous outer layer of the intervertebral disc’s called?
Annulus Fibrosis
What is the inner layer of the intervertebral disc’s called?
Nucleus Pulposus
Do the intervertebral disc’s have a blood supply?
No they are avascular
The cervical spine has what sort of curve to it?
Lordotic
Where are the Zygapophysial Joints located?
They are the articulation between the lower and upper articular facets of the vertebrae.
Name all the anatomical parts that make up a single vertebrae. ( start anteriorly and work back)
Large heavy anterior body of vertebrae.
Pedicles - the arch (vertebral foramen) anteriorly made up of pedicles
Laminae - the arch (vertebral foramen) posteriorly made up of laminae
Spinous process - the laminae meet to form a spinous process
Articular facets - they arise to meet the vertebrae on above and below
What is the most common fracture site on the vertebrae.
The pars interarticularis
Where is the pars interarticularis located?
between the superior and inferior facets on the vertebrae.
Which joint is considered the only bony articulation between the upper limb and the axial skeleton?
The sternoclavicular ( s-c) joint
What type of synovial joint is the sternoclavicular joint? and what are the available movements of the joint?
Saddle joint
elevation/depression
protraction/retraction
rotation
When Elevation of the shoulder occurs the sternal end of the clavicle becomes?
Depressed
With retraction of the scapula there is a ____ movement to the sternal end of the clavicle.
Anterior
With protraction of the scapula there is a _____ movement at the sternal end of the clavicle.
Posterior
The Costoclavicular ligament connects what 2 structure? what movement does it keep in check?
First rib to sternal end of clavicle
Checks all movements of the clavicle except inferior.
What ligament connects the first rib to the sternal end of the the clavicle.
The costoclavicular ligament
The Interclavicular Ligament connects what 2 structures?
The 2 SC joints across the manubrium
The ____ ligament connects the 2 SC joints across the manubrium.
The interclavicular ligament
The Sternoclavicular ligaments connects which parts of the sternum to the clavicle?
The anterior sternum to ant clavicle
The posterior sternum to clavicle
The Anterior and posterior portions of the sternum and clavicle are connected by which ligaments?
The Sternoclavicular ligaments
The Manubriosternal joint is the articulation between which to structures and what type of joint is it?
it is a cartilaginous joint and it is the junction between the Manubrium and the sternum.
Does the Manubriosternal joint have any movement avaliable to it?
Yes some while breathing but as you age 10% of adults will have this joint ossify.
Where the manubrium articulates with the sternum is called the ___joint.
The manubriosternal Joint
Xiphisternal joint is the articulation between what 2 structures? what type of joint is it?
The articulation between the Xiphoid process and the body of the sternum.
cartilaginous
The Costovertebral joints are a little different. The Head of the rib articulates with the facets on the side of the vertebral body. explain how the facets line up.
The Superior facet of the head articulates with the inferior facet of the superior vertebral body,
The Inferior facet on the head articulates with the superior facet on the vertebral body of the same number
The Costotransverse joint is the articulation between what 2 structures?
The facet on the tubercle of the rib articulates with the costal facet on the associated TVP.
