Advanced Imaging Flashcards
Appropriate used of CT imaging - Spine (5)
- Fxs
- Osseous congenital anomalies
- Central/ IVF stenosis
- Degen
- Disc herns (better than MRI)
Appropriat use of MRI scan- Spine (4)
- Multiple lvls of degen
- Neurological conditions (Adrnold chiari etc)
- Congenital anomalies
- Discitis and infections
What are the 4 disc herniation points + m/c
Central
Subarticular (m/c)
Foraminal
Extraforaminal
3 major classifications of Disc lesiona
- Dehydrated/ disiccated disc
- Bulging disc
- Herniated disc
3 major classifications of disc lessions
- Protrusion (contained within annular fibres+PLL)
- Extrusion- Extruded beyond the annular fibred but still attached
Sequestration- Extruded and migrated away from parent disc
Classification of a disc bulge
- Commonly seen in degenerative disc
- -More than 25% of the disc margin is outside the boundry of the adjacent vert body
—Usually no clinical sig
2 types of disc bulges
circumferential
asymetric
What is a protrusion disc herniation and where is it mc seen
<25% of the disc margin
-herniated material has a broad base
-mc seen in subarticular herniation
What is a extrusion disc herniation
<25% of the disc margin
-The base is narrower than the extruded material
What is a sequestration disc herniation
form of disc extrusion
-free fragemnt of disc material has no connection and can migrate up or down
If you have a L4-5 subarticular disc hern what nerve root will be affected
L5
If you have a L4-5 foraminal disc hern what nerve root will be affected
L4
Where are cervical disc herns mc
- C5-6
- C6-7
- C4-5
What type of herniation is mc
Subarticular herniations
What nerve root is affected in cervical disc herniations
Always afffecting IvF@ the herniation level
