XXXX due to ossification of the yellow ligament at the lower lumbar spine.

@entity1 @entity174 @entity158 @entity614 @entity3057
STUDY DESIGN: A case report. OBJECTIVES: To report a rare case of a 27-year-old female with @entity3057 at the lower lumbar spine presenting @entity614 with a drop foot. SUMMARY OF BACKGROUND DATA: The majority of cases of @entity3057 occur at the lower third of the thoracic or the thoracolumbar spine. There are only a few reports of @entity3057 in the lumbar spine and @entity614 due to @entity3057 at L4-L5 and L5-S1 levels is very uncommon. METHODS: A 27-year-old female with a prior @entity174 of posterior ring apophysis of L5 presented with leg @entity158 and a drop foot. Magnetic resonance imaging demonstrated stenosis with compression of the cauda equina at the L4-L5 and L5-S1 levels. RESULTS: Decompressive laminectomy of L5 and removal of the ossified yellow ligaments were performed. Histologic examination of en bloc specimen of @entity3057 revealed degenerative changes of the elastic fibers in the yellow ligament with adjacent chondrosis and ossification. The @entity1 's severe leg @entity158 disappeared completely, although the extent of the drop foot had not fully recovered at the final follow-up examination. CONCLUSIONS: The mechanism of @entity3057 in the present case was unclear. The @entity1 did not have any previous generalized disorders besides the history of a ring apophysial @entity174 or any family history of treatment for @entity3057 or @entity3057 . Therefore, localized mechanical stress might have influenced the development of @entity3057 at lower lumbar spine.
