A Rare Case of Progressive Palsy of the Lower Leg Caused by a Huge Lumbar Posterior Endplate Lesion after Recurrent Disc Herniation

Figure 3

Computed tomography (CT) showed a huge ossification on the dorsal of annulus fibrosus of intervertebral disc at L4/5 at the age of 23 years. Ossification at L4/5 was larger than that at L5/S1. The ossification was consecutive with the posterior end plate at L4/5 and L5/S1. CT did not show an abnormal ossification of annulus fibrosus or posterior longitudinal ligament at the other levels. MRI revealed severe stenosis at L4/5 and the lesion of the posterior endplate lesion still remained at L5/S1.