Lippitt A B
Clin Orthop Relat Res. 1976 May(116):112-5.
An apparently unique case of retroprotrusion of a portion of the vertebral end plate plus L4 disk in a 16-year-old boy demonstrated a complete myelographic block. The block was produced by a large fragment of bone which had broken off the inferior end plate of the body of L4 and was protruding into the spinal canal. Removal of the bony block and protruding disk resulted in complete resolution of symptoms.
一名16岁男孩出现了椎体终板部分及L4椎间盘后凸的明显罕见病例，脊髓造影显示完全梗阻。梗阻是由一大块从L4椎体下终板断裂并突入椎管的骨块造成的。切除骨块和突出的椎间盘后症状完全缓解。
