what is mild spondylolisthesis
Antegrade spondylolisthesis is the condition or problem of the spinal column that results when one vertebra (spinal bone) slips forward in relation to the vertebra that is bel â¦ ow it.ypically and traditionally the term spondylolisthesis by definition means the forward slippage of one vertebra in relation to the one below it, but the additional term antergrade is added to clarify the direction of abnormal movement because of the occasional occurrence of backward movement.