Sacroiliac joint
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Lumbar spine:
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score the lower border of T12 to the upper boarder of S1 -
use both antero-posterior and lateral views -
use the mSASSS grading: 0–3 (0 normal; 1 erosion, sclerosis, squaring; 2 syndesmophyte non-bridging; 3 bridging syndesmophyte) -
score range 0–36
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Cervical spine
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score the lower border of C2 to the upper border of C6 -
use only lateral views -
use the mSASSS grading: 0–3 (0 normal, 1 erosion, sclerosis, squaring; 2 syndesmophyte non-bridging; 3 bridging syndesmophyte) -
add 1 point for every level fused posteriorly (C2/C3, C3/C4, C4/C5, C5/C6) -
score range 0–28
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Total score range: 0–72 |