AS and DISH

Question 1

diagnostic criteria of Ankylosing spondylitis

Answer 1

diagnostic criteria:
- bilateral sacroiliitis
- +/- uveitis
- HLA-B27 positive

Question 2

AS cervical fractures

Answer 2

• cervical fractures common due to osteoporosis and long lever arms
• high rate of neurological injury
• mri - to assess for fracture line, haematoma, disc involvement and cord oedema

Question 3

Ankylosing spondylitis xray findings:

Answer 3

• bamboo spine
• osteopenia
• marginal syndesmophytes

Question 4

DISH

Answer 4

diffuse idiopathic skeletal hyperostosis
- diabetes

Diagnosis
- non-marginal syndesmophytes at three successive levels (4 contiguous vertebrae)
- preservation of disc space
- absence of facet-joint ankylosis
- absence of SI joint erosion
- no sacral involvement