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Spine
intermediate
X-Type

Odontoid Fractures - Classification and Management

Cervical Trauma

A 72-year-old man falls down stairs and presents with neck pain. CT scan shows a Type II odontoid fracture with 6mm displacement and 12 degrees of angulation. He is neurologically intact. His past medical history includes well-controlled hypertension and he is independent with all activities of daily living. Regarding odontoid fractures:

Mark each as TRUE or FALSE

A

The Anderson-D'Alonzo classification divides odontoid fractures into Type I (tip avulsion - rare), T...

B

Type II fractures have high nonunion rates (30-40%) with collar treatment due to the watershed blood...

C

Type III fractures have the highest nonunion rate and always require surgical fixation; Type II frac...

D

Type III fractures have excellent union rates (85%) with rigid collar immobilization because the fra...

E

Posterior C1-C2 fusion (Harms technique using C1 lateral mass and C2 pedicle screws) is the gold sta...

Answer the questions to see explanations

Click T (True) or F (False) for each option