This is a condition characterised by 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 vertebra) without slippage of the vertebrae.
Also indexed as
Iatrogenic spondylolysis without slippageSpondylolysis without slippageSpondylolysis without slippage with determinantSpondylolysis without slippage with determinant, otherwise specifiedSpondylolysis without slippage with no determinantSpondyloptosis without slippageTraumatic spondylolysis without slippage