Fig. 12
From: MRI of the axial skeleton in spondyloarthritis: the many faces of new bone formation
Pitfalls in imaging and diagnosis of new bone formation: sequelae of infectious spondylodiscitis. a, b Sagittal T1-weighted MR images and (c) computed tomography (CT) show vertebral fusion (dotted line) of L2-L3 after destruction of the vertebrae and intervertebral disc due to tuberculous spondylodiscitis. Note that the protrusion of the remainder of the anterior corner of the L3 mimics plump syndesmophyte formation (short arrow). L5-S1 also shows signs of vertebral fusion after destruction of the intervertebral disc, mimicking transdiscal ankylosis as seen in SpA