5-Ossification Posterior Longitudinal Ligament (OPLL)

Question 1

Whats some general info about OPLL?
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pg 998 of text book

Answer 1

Ossified Posterior Longitudinal Ligament
− Can occur with (DISH) or on its own
− Higher incidence in Japanese males
− Usually seen in the cervical spine
− Myelopathy can occur when ossification reaches greater
than 60% of canal size.

Question 2

What are the Radiographic Findings?

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Answer 2

− Continuous or discontinuous osseous density at the back of
one or more vertebral segments
− Narrowing of the spinal canal