Fig. 3
From: Role of diagnostic imaging in psoriatic arthritis: how, when, and why
a Syndesmophytes at the anterosuperior endplate of L3 and L4 vertebrae (thin arrows) and Romanus lesions (erosions) at the anterior endplate of T12, L1 and L2 vertebrae (white arrow heads). b Square vertebrae (*) and barrel‐shaped vertebrae (thick arrow) show straightening or convex bulging of the ventral aspect of the vertebral body, mainly in the thoracolumbar junction and lumbar segments as a result of inflammation. c Right lateral syndesmophyte (thin arrow) at the superior endplate of L4 vertebra and sacroiliac ankyloses (black arrow heads)