Spondylolisthesis means one vertebra has slipped forward over the one below it. It can result from a stress defect in the bone (isthmic type, often from adolescence), age-related joint degeneration (degenerative type, common after 50), or rarely trauma. Many people with low-grade slips live comfortably; others develop persistent back pain, leg pain or numbness that needs treatment. The right plan depends on the grade of the slip, its stability and your symptoms.
Symptoms of spondylolisthesis
The classic pattern is lower back pain that worsens with standing, walking and back-bending, and eases with sitting or bending forward. When the slip narrows the nerve passages, patients also develop leg pain, tingling or heaviness on walking — similar to canal stenosis. Hamstring tightness is common. In higher-grade slips, a visible step in the lower back or a change in posture and gait may appear. Progressive weakness or bladder or bowel changes are red flags requiring urgent review.
Grading and diagnosis
Standing X-rays measure how far the vertebra has slipped: Grade I (up to 25%) and Grade II (25–50%) are low-grade; Grades III and IV are high-grade. Flexion-extension X-rays check whether the slip moves — an unstable slip behaves differently from a fixed one. MRI shows how much the nerves are compressed and the condition of the discs. This combination — grade, stability and nerve compression — decides the treatment, not the X-ray appearance alone.
Non-surgical treatment first
Most low-grade slips are managed without surgery: a structured core-strengthening and lumbar stabilisation programme, activity modification (limiting repeated back-bending and heavy lifting), weight management and short courses of appropriate medication. Many patients return to full activity with this approach. Selected patients with dominant leg pain benefit from image-guided nerve root injections while rehabilitation progresses.
When surgery is indicated
Surgery is considered when leg pain or claudication persists despite good conservative care, when there is progressive slip or neurological deficit, or in high-grade slips. The operation typically decompresses the trapped nerves and, when the segment is unstable, stabilises it with instrumented fusion. Unlike simple stenosis, an unstable spondylolisthesis often genuinely needs fusion — this is one situation where screws and rods are used for clear, evidence-based reasons.
Minimally invasive options at CARE Hospitals
Where the anatomy allows, decompression and fusion can be performed through minimally invasive approaches that spare the back muscles, reduce blood loss and shorten hospital stay. Dr. Arun Reddy M evaluates spondylolisthesis at CARE Hospitals, HITEC City (Gachibowli) by day and at Indi Spine-Brain Neuro Care, Madinaguda in the evenings — bring your standing X-rays and MRI, or send them through this website for a preliminary review.