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Case Reports
. 2022 Feb 25;15(2):e248542.
doi: 10.1136/bcr-2021-248542.

Andersson lesion in ankylosing spondylitis

Satvik N Pai  1 , Karthik Kailash  2 , Vignesh Jayabalan  2 , Sudhir Ganesan  2
Affiliations
Case Reports

Andersson lesion in ankylosing spondylitis

Satvik N Pai et al. BMJ Case Rep. .
No abstract available

Keywords: andersson lesion; ankylosing spondylitis; neurosurgery; orthopaedics; rheumatology.

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Conflict of interest statement

Competing interests: None declared.

Figures

Figure 1
Figure 1
(A) Antero-posterior and (B) lateral radiograph of lumbosacral spine, (C) dorsal spine radiograph showing bilateral decreased SI joint space, and sclerosis around SI joints, suggestive of sacroiliitis (red arrows). Syndesmophytes are seen (blue arrows) as paravertebral ossifications, causing the spine to have diffuse syndesmophytic ankylosis and giving the bamboo spine appearance (green arrow). Irregularities, erosions and sclerosis of vertebral end plates of D11–D12 are noted (yellow arrow), which are suggestive of Andersson lesion. SI, sacroiliac.
Figure 2
Figure 2
MRI showing classical features of Andersson lesion (yellow arrows) in D11–D12 of hemispherical shaped lesion, which is hypointense on (A) T1 weighted sequences, hyperintense on (B) T2 weighted sequences and (C) STIR sequences. Modic II changes (blue arrows) being hyperintense on T1 and T2 sequences are noted in D4, D5, D7 and D8 vertebra. (D) Axial section showing vertebral end plate erosions, irregularity and reactive sclerosis. (E) SI joints showing decreased joint space (orange arrow) and subchondral erosions (green arrow). STIR, short tau inversion recovery.
Figure 3
Figure 3
(A, B) Antero-posterior and lateral postoperative radiographs following posterior spinal stabilisation and instrumented fusion of D9–L2 vertebra, later followed by (C and D) minimally invasive anterior discectomy, anterolateral interbody fusion of D11–D12 with cage and bone grafting. (E and F) Follow-up radiographs 1 year following surgery, showing no recurrence of Andersson lesion.
See this image and copyright information in PMC

References

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