spondylolisthesis
noun
spon·dy·lo·lis·the·sis
ˌspän-də-lō-lis-ˈthē-səs 
: forward displacement of a lumbar vertebra on the one below it and especially of the fifth lumbar vertebra on the sacrum producing pain by compression of nerve roots
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“Spondylolisthesis.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/spondylolisthesis. Accessed 22 Dec. 2024.
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