What is it?
One vertebra shifts relative to another; symptoms depend on stability and nerve involvement, not the slip alone.
Symptoms and important signs
Back pain, sometimes radiating leg pain or walking limitation.
How is it assessed?
Examination, standing X-rays and selected MRI or dynamic views.
Care and treatment options
Rehabilitation and symptom control; selected instability or persistent nerve compression may need surgery.
When to seek help
Progressive weakness or new bladder, bowel or saddle-sensation changes require emergency assessment.