Spondylolysis with anterolisthesis

Spondylolysis affects the pars interarticularis, the bony bridge at the back of a vertebra. Anterolisthesis describes one vertebra sitting farther forward than the vertebra below it. The two findings can occur together, but the amount of forward movement and whether it changes with position or time are separate questions from whether the pars defect is painful.

Symptoms may include low-back pain, stiffness, buttock discomfort, or pain, tingling, and weakness in a leg if a nerve is irritated. Assessment may include movement and neurological examination, standing X-rays, and other imaging when the anatomy or nerve status needs clarification.

Early care often involves avoiding painful extension and twisting while staying gently active. Physiotherapy can develop trunk control, hip strength, lifting technique, and a graded return to work or sport. Exercise therapy should be adjusted if leg pain, numbness, or weakness appears. A clinician may also discuss symptom relief or a brace in selected circumstances.

A spine specialist may be involved when the slip is progressing, pain remains function-limiting, or a nerve is compressed. Spinal fusion can be considered for selected cases after the stability, symptoms, imaging, and personal goals have been reviewed; the presence of a slip alone does not make surgery automatic.

Arrange review for persistent pain, new leg symptoms, reduced walking tolerance, or a noticeable change in posture or function. Seek urgent care for progressive weakness, loss of bladder or bowel control, or numbness around the saddle area. Rapid neurological change requires prompt assessment, regardless of the measured slip.

Ask which vertebra has moved, whether the slip is stable, and whether a nerve is involved. Ask which exercises and work tasks are safe, how progress will be monitored, and what findings would lead to a specialist or surgical discussion.