Spondylolisthesis (Slipped Vertebra): Symptoms and Treatment

A “slipped disc” is a phrase most people know. A slipped vertebra is a different problem, and the two are often confused. In spondylolisthesis, a bone of the spine slides forward over the one beneath it. It is a common cause of persistent lower back pain in both teenagers with sporty backs and adults in their fifties and sixties.

What is spondylolisthesis?

The word comes from Greek: “spondylos” (vertebra) and “olisthesis” (slip). Normally the vertebrae are held in line by discs, joints and ligaments. When those restraints fail, one vertebra glides forward, narrowing the space for the nerves and putting the segment under stress.

Main types

• Isthmic: a stress fracture in a small bridge of bone (the pars) lets the vertebra slip. It often begins in adolescence, common in gymnasts, cricketers and weightlifters, and may only cause symptoms later.
• Degenerative: age-related wear of the discs and facet joints loosens the segment, most often at L4–L5 in people over 50, and more often in women.
• Others: less commonly caused by injury, previous surgery or a birth difference.

Symptoms

• Lower back pain that is worse on standing, walking or arching backwards, and eases on sitting or bending
• Tight hamstrings and a stiff, stooped walk
• Pain, tingling or numbness down one or both legs
• Leg heaviness on walking, if the canal is also narrowed (see our guide on lumbar spinal stenosis)
• Rarely, muscle weakness or bladder and bowel changes, which need urgent care

How it is diagnosed

Standing lateral X-rays show the slip, and flexion-extension views show whether the segment is unstable. An MRI shows nerve compression, and a CT may be used to look at the bone in detail. The Meyerding grade describes how far the vertebra has moved.

Treatment without surgery

Most people, especially with grade I or II slips, improve without an operation. Treatment focuses on core and hamstring work, posture, activity modification and short-term medication under a doctor's guidance. Adolescents with a fresh stress fracture may need rest from sport and sometimes bracing. Our physiotherapy and rehabilitation service builds these programmes, and we review progress with repeat imaging when needed.

When surgery is considered

• Disabling pain that persists after a proper trial (usually several months) of non-surgical care
• Leg weakness, or nerve compression on MRI causing progressive symptoms
• A high-grade slip, or a slip that keeps progressing
• Clear instability on flexion-extension X-rays

The operation relieves pressure on the nerves and fuses the unstable segment so it stops moving. In many patients this can be done through small incisions with MIS-TLIF (minimally invasive spinal fusion), which is designed to reduce muscle damage compared with an open approach. This sits within our broader minimally invasive spine surgery service.

Recovery after fusion

Patients are usually walking on the day after surgery or soon after, with a structured plan that limits bending and lifting for the first few weeks while the bone fuses. Physiotherapy helps rebuild core strength, and desk work is often possible again within a few weeks, though full bone fusion takes several months.

For an independent patient guide, see the American Academy of Orthopaedic Surgeons page on spondylolysis and spondylolisthesis.

Sport, work and daily life with a slipped vertebra

Many people with low-grade slips continue normal work and recreation. Heavy lifting, repeated arching (as in fast bowling or gymnastics) and high-impact loading are the usual triggers to modify. Physiotherapy teaches you to keep the spine in a stable position and to strengthen the deep trunk muscles that act like a natural brace. Desk workers benefit from regular movement breaks and a supportive chair, especially if symptoms rise after long sitting.

Common myths

• “A slipped vertebra will keep slipping until surgery.” Most low-grade slips stay stable for years.
• “Surgery means a stiff back forever.” Fusion stiffens one segment; the rest of the spine keeps moving, and most patients function well.
• “Bed rest is best.” Prolonged rest weakens muscle support; guided activity usually works better.

Questions to ask your surgeon

• Which level is affected, and what grade is the slip?
• Is the segment unstable on flexion-extension X-rays?
• What non-surgical options remain, and for how long should I try them?
• If surgery is needed, is a minimally invasive approach suitable for me?

Spine consultation in Wakad, Pune

Dr. Nirmal Patil, MS (Ortho), has 16 years of experience in spine surgery and consults at Precision Ortho Spine & Rehab Clinic in Wakad, Pune, for patients from Hinjewadi, Baner, Pimple Saudagar and across Pimpri-Chinchwad. The aim is always the least invasive treatment that solves the problem, and that often means no surgery at all.