Lumbar Spine Part 1 Flashcards
The ______ spine refers to the “low back” and is made up of ___ vertebrae and their intervertebral discs.
Lumbar Spine
5 Vertebrae
Beginning about ___ inches from the ________ angle of the scapula, the vertebrae of the lumbar spine create a ________ curve before finally attaching to the sacral spine.
6 Inches
Inferior Angle
Lordotic Curve
Based on the following image, label numbers 1-9 of the lumbar spine.
1) Intervertebral Foramen
2) Nucleus Pulposus
3) Annulus Fibrosis
4) Vertebral Body
5) Intervertebral Disc
6) Superior Articular Facet
7) Posterior Longitudinal Ligament
8) Ligamentum Flavum
9) Supraspinous Ligaments
In the lumbar spine, the _________ are commonly compared to hockey pucks interspaced with ______________ _____ known as jelly donuts.
Vertebrae
Intervertebral Discs
The _________ allow for attachments of muscles and ligaments that provide _________ and mobility of the lumbar spine.
Vertebrae
Stability
The ______________ _____ act to absorb and ________ axial loads and tensile stressed from one vertebra to another.
Intervertebral Discs
Transmit
The ____ lumbar vertebra is the largest and transmits forces from the _____ extremities to the sacrum and pelvis.
5th Lumbar Vertebra
Upper Extremities
T/F - The 5th lumbar vertebra is wedge shaped and forward orientated, therefore the above vertebra sits slightly anteriorly allowing for normal lordotic curve.
False - The 5th lumbar vertebra is wedge shaped and forward orientated, therefore the above vertebra sits slightly POSTERIORLY allowing for normal lordotic curve.
Which segment of the vertebral column is the most common segment for problems?
L5-S1 Segment
The lumbar facet joints sit in the ________ plane, therefore the available movements are _______ and _________.
Sagittal Plane
Flexion and Extension
T/F - Rotation and side bending are very limited at the lumbar spine
True
The role of the ______ are to stabilize the spine, allow limited movement and protect the IVDs from shear forces.
Facets
There are ___ pairs of facets in the lumbar spine, consisting of ________ (facing medial and backward) and ________ (facing lateral and forward).
5 Pairs
Superior
Inferior
Name the 3 spine conditions due to injury, degeneration and/or trauma.
1) Spondylosis
2) Spondylolysis
3) Spondylolythesis
A spine condition involving degeneration of the intervertebral disc.
Spondylosis
A spine condition where there is a defect in the pars interarticularis, involving a fracture between the lamina and pedicle.
Spondylolysis
What is displayed in the following image?
Scottie Dog X-Ray
A Scottie dog x-ray is used as a diagnostic sign for _____________ and occurs with over _________ pressing the SPs together.
Spondylolysis
Over Extension
A spine condition involving forward displacement of one vertebrae over another.
Spondylolythesis
T/F - Discs make up approximately 35% of the total length of the vertebral column and this will decrease with age due to overall degeneration.
False - Discs make up approximately 25% of the total length of the vertebral column and this will decrease with age due to overall degeneration.
What are the 2 parts of an intervertebral disc?
1) Annulus Fibrosis
2) Nucleus Pulposus
Part of the intervertebral disc consisting of approximately 20 rings of criss-crossing collagenous fibers.
Annulus Fibrosis
Part of the intervertebral disc that is incompressible fluid.
Nucleus Pulposus
A general term used to describe any change in the annulus shape of an intervertebral disc that will cause it to protrude beyond its normal perimeter.
Herniation
What are the 4 categories of disc herniation?
1) Protrusion
2) Prolapse
3) Extrusion
4) Sequestration
Based on the following image, label letters A-D with their associated type of disc herniation.
A) Protrusion
B) Prolapse
C) Extrusion
D) Sequestration
A type of disc herniation when the nucleus pulposus is only contained by the outer fibres of the annulus and supporting ligamentous structures.
Protrusion
A type of disc herniation involving rupture of the nuclear material into the vertebral canal.
Prolapse