Ossificationofthe Posterior Longitudinal Ligament

Ossification of the posterior longitudinal ligament (OPLL) is an idiopathic disorder of the spine, in which calcification or ossification of various lengths occurs in the posterior longitudinal ligament. The middle cervical spine, T3 through T6, is most commonly affected. Pathologically, the condition is characterized by bony overgrowth of the ligament that is attached to the posterior surface of the vertebral body and intervertebral disk, compressing and flattening the spinal cord behind. The lesional bones are

Opll Lateral Radiograph

Fig. 9.56A-C Ossification of the posterior longitudinal ligament (OPLL). A Lateral radiograph of the cervical spine in a 46-year-old female shows vertical, plaque-like ossification attached to the posterior surface of the middle cervical vertebral bodies (arrows). B T2-weighted MRI reveals undulating low signal intensity of mineralized ligament posteriorly demarcated by bright signal of cerebrospinal fluid (arrows). C Posterior bone scan shows longitudinal tracer uptake in OPLL in the midline of the cervical spine (arrows)

Ossified Posterior Longitudinal Ligament

Fig. 9.56A-C Ossification of the posterior longitudinal ligament (OPLL). A Lateral radiograph of the cervical spine in a 46-year-old female shows vertical, plaque-like ossification attached to the posterior surface of the middle cervical vertebral bodies (arrows). B T2-weighted MRI reveals undulating low signal intensity of mineralized ligament posteriorly demarcated by bright signal of cerebrospinal fluid (arrows). C Posterior bone scan shows longitudinal tracer uptake in OPLL in the midline of the cervical spine (arrows)

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