这个词是什么意思？
Deficient development or degeneration of a portion of the VERTEBRA, usually in the pars interarticularis (the bone bridge between the superior and inferior facet joints of the LUMBAR VERTEBRAE) leading to SPONDYLOLISTHESIS.
中文名称索引；定义为 MeSH 英文原文，尚未逐条译审。MESH:D013169 · MeSH 2026。
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