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Pronunciation: spon'di-lol'i-sis

Definition: Degeneration or deficient development of a portion of the vertebra; commonly involves the pars interarticularis, which can result in a spondylolithesis.

[spondylo- + G. lysis, loosening]

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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.