How many vertebrae?
C7
T12
L5
S5
3-4 Coccyx
What is the curve in the cervical region of the spine?
Cervical lordosis
Anterior convex
What is the curve in the thoricic region of the spine?
Thoracic kyphosis
Anterior concave
What is the curve in the lumbar region of the spine?
Lumbar lordosis
Anterior convex
What is the curve in the sacral region of the spine?
Sacral kyphosis
Anterior concave
What are the movement of the spine
Sagittal plane (Flexion/Extension)
Frontal Plane (Lateral flexion/Extension)
Transverse Plane (Axial rotation)
What are some abnormal spine curvature?
Excessive kyphosis
Excessive lordosis
Scoliosis
What is the shape of the spine of a baby in utero and newborn?
C shape
Primary Curve: Kyphosis
What is the secondary curve for babies?
Cervical lordosis
Appears in first couple months of life due to the baby moving head to look around.
What is the other secondary curve for babies?
Lumbar lordosis to assist with walking
1 year to 18 months
What does a typical vertebrae contain?
1) Spinous process
2) Lamina
3) Transverse Process
4) Pedicle
5) Arch
6) Vertebral body (weight bearing portion)
7) Superior and inferior articular facets
8) Vertebral canal (foramen)
What do intervertebral discs have?
Nucleus pulposus ( Gell like material for shock absorbtion)
Anulus fibrosus (round rings of woven fibers)
What is the articulation between the inferior and superior articular facet of two different vertebrae?
Facet joints
(Zygapophysial joint)
What are the motions of the cervial vertebrae in regards to the orientation of their facets?
Transverse plane and frontal plane
Moderate movement in most directions
What are the motions of the thoracic vertebrae in regards to the orientation of their facets?
Frontal plane
Lateral flexion and most other movements but the rib cage stops most excessive movements
What are the motions of the lumbar vertebrae in regards to the orientation of their facets?
Sagittal plane
Flexion and extension only
What comes through the intervertebral foramen?
Spinal nerves
What is a slipped disc (Herniated disc)
When the anulus fibrosis become weak and compression of the spinal cord causes the nucleus pulposus to slip out and compress the spinal nerve root exiting through the intervertebral foramen
Where are the most common places for a herniated disc?
Cervical and lumbar regions
What does a typical cervical vertebrae contain?
1) Lamina is small
2) Pedicles are small
3) Body is small
4) Transverse process and foramen (vertebral artery and vein)
5) Articular facet
What are the movement of C1 atlas
Holds the skull
Only bony contact
No body
Yes motion
Atlanto-occipital joint
Motions of the C2 cervical axis
“No” movement
Atlanto-axial joint
What is unique about the dens process?
It used to be part of the C1 atlas
What ligament holds the dens to the atlas?
Transverse ligament