Odontoid Fracture Flashcards
1
Q
When does the odontoid secondary ossification center appear, then fuse?
A
Appears age 3
Fuses age 12
2
Q
Which type of odontoid fracture has a high non-union rate?
A
Type II (neck fx); d/t watershed zone btw vertebral a. and internal carotid a. Type I is avulsion of tip Type III is a fx at the base of odontoid
3
Q
How are odontoid fx treated?
A
Type I (hard collar for 6-12 weeks)
Type II elderly (hard collar 6-12 weeks)
Type II young (halo or hard collar)
Type III (hard collar)
Type II/III that go on to non-union or are at risk for non-union can be tx with posterior C1-C2 fusion
4
Q
What are the risk factors for odontoid fracture non-union?
A
1) >5mm displacement
2) >50yo
3) > 10° angulation
4) comminution
5) delay in treatment
5
Q
What are the risk factors for odontoid fracture non-union?
A
1) posterior >5mm displacement
2) >50yo
3) > 10° angulation
4) comminution
5) delay in treatment
