Spine

Question 1

Cervical clearance

Answer 1

• Clinical decision
• Benefit avoid unnecessary
  a). Nexus criteria (60-98%)
  b). Canadian spine rule (more specific)

Question 2

Stable spine

Answer 2

The ability of spine to withstand the physiological load

Question 3

5 Macfee criteria JBJS 1983

Answer 3

• Collapse vertebral body more than 50%
• 2 or more level
• Progressive neurology
• PLC disruption
• Kyphosis more than 20

Question 4

McCormak load sharing classification

Answer 4

3 components :
C - Communitation
A - Apposition
R - Reducibility
> Determine ant/post/long or short seg
>More than 7 = Prefer anterior, less than 7 = Short segment

Question 5

Transition from thoracic kyphosis to lumbar lordosis

Answer 5

Rigid to flexible

Question 6

TLI severity score

Answer 6

• Morphology of fracture
• Neurology
• Intergrity of PLC

Question 7

Approaches determined by soft tissue conditon

Answer 7

• Anterior if got neurology deficit because don’t need to retract all the spinal cord.

Question 8

Ankylose spine selection level

Answer 8

3 levels above and below because of the long lever arm.

Question 9

MIST Advantages & Disadvantages

Answer 9

Advantages
- Less blood loss
- Faster rehab
- Less mobility
Disadvantages
- Cannot perform fusion
- High risk of radiation exposure