common
Spondylolisthesis
Spondylolisthesis refers to a condition in which one spinal vertebra slips out of place compared to another. While some medical dictionaries define spondylolisthesis specifically as the forward or displacement of a vertebra over the vertebra inferior to it, it is often defined in medical textbooks as displacement in any direction.
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See all of Bones →Plain-language summary adapted from Wikipedia. Not medical advice.