Blockvertebrae occur when there is improper segmentation of the vertebrae, leading to parts of or the entire vertebrae being fused.
脊椎分节不全指不当分割的椎骨导致的部分或整个椎体的融合。
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Congenital vertebral anomalies, including butterfly, block, and transitional vertebrae, and hemivertebrae, are a collection of malformations of the spine in animals.