Cervical Spine in Psoriasis and in Psoriatic Arthritis

Ossification in the region of the posterior longitudinal ligament as a cause of cervical myelopathy.

“…Interestingly, ossification of the lateral paravertebral ligaments with no degenerative changes in the spine occurs in psoriatic arthritis (Bywaters and Dixon, 1965) in which an infectious agent (PPLO) has been implicated (Wright and Reed, 1964). Ossification within the spinal canal has not been reported in this disease (Kaplan, Plotz, Nathanson, and Frank, 1963), but the subject is mentioned in passing in the connection of an infectious agent causing paravertebral ligamentous ossification.…”

Paravertebral ossification in psoriatic arthritis.

“…(4) Spondylitis has been seen and described many times in patients with psoriatic arthritis, but it is usually similar radiologically to ankylosing spondylitis, with sacro-iliac involvement and what Forestier has called "syndesmophytes" (Fletcher and Rose, 1955;Graber-Duvernay, 1957;Wright, 1957) or alternatively affecting only the sacro-iliac joints (Dixon and Lience, 1961) or cervical spine (Kaplan, Plotz, Nathanson, and Frank, 1963;Estrin, 1963).…”

Imaging Features of Psoriatic Arthritis and Reiter's Syndrome

“…10). 39 Erosion of cervical apophyseal joints was noted in 18% in one series 40,41 and apophyseal sclerosis occurred in 35%. 41 Anterior ligament calcification has been seen in 19% of radiographs of patients with psoriatic arthritis.…”