What causes spondylolisthesis?

Spondylolisthesis can be caused by stress fractures (spondylolysis), degenerative changes, congenital defects, or trauma. The most common types are isthmic — from stress fractures often occurring during adolescence — and degenerative, which develops gradually with age-related wear of the spinal joints and discs.

How is spondylolisthesis graded?

Spondylolisthesis is graded from I to V based on the percentage of vertebral slippage: Grade I (0–25%), Grade II (25–50%), Grade III (50–75%), Grade IV (75–100%), and Grade V (complete displacement). Higher grades carry greater risk of progression and nerve compression.

Can spondylolisthesis get worse over time?

Some cases can progress, especially in children and adolescents with isthmic spondylolisthesis, and in adults with degenerative spondylolisthesis where disc and facet joint degeneration continues. Regular monitoring with standing X-rays helps track any progression and guide treatment decisions.

What does spondylolisthesis surgery involve?

Spondylolisthesis surgery typically combines decompression and fusion. Decompression — such as lumbar laminectomy — removes bone and ligament to create space for compressed nerves. Fusion — typically TLIF or PLIF — stabilizes the slipped vertebra with screws and rods, with bone graft that promotes the vertebrae to grow together. Robotic-assisted techniques can improve screw placement precision. Most procedures involve a hospital stay of 1–3 days with a graduated return to activity over several months.

What should I do if I have been told I need spondylolisthesis surgery?

If you have been told you need spondylolisthesis surgery, consider a second-opinion consultation to review your imaging, your symptoms, and the proposed plan. A thorough evaluation should include your slip grade, stability on flexion-extension X-rays, nerve compression pattern, and whether conservative care has been given a fair trial. Understanding what surgery involves and why it is being recommended will help you make a confident, informed decision.

Spondylolisthesis Treatment in Fort Wayne

Spondylolisthesis is when one vertebra slips forward on the one below it, which can narrow the space for nerves and cause back and leg pain. Mild cases are managed non-surgically; when there is instability or nerve compression that limits life, a decompression and fusion may be considered.

Symptoms

Lower back pain

Aching pain in the lower back, often worse with standing or walking and eased by sitting

Leg pain

Pain radiating down one or both legs, similar to sciatica, from nerve compression

Muscle spasms

Tightness and spasms in the back and hamstring muscles

Difficulty walking

Trouble walking long distances or standing for extended periods, sometimes with a stooped posture

Numbness or weakness

Loss of sensation or strength in the legs in more severe cases

Causes

Stress fractures

Small cracks in the vertebra from repetitive stress or sports activities, often developing in adolescence

Degenerative changes

Age-related wear and tear of joints and ligaments leading to gradual vertebral slippage

Congenital defects

Born with abnormal vertebral development that predisposes to slippage

Trauma

Injury from accidents or falls that damage spinal structures

Diagnosis

Physical Examination

Dr. Greenberg evaluates your posture, range of motion, and performs specific tests to assess spinal stability and nerve function.

Posture assessment
Neurological testing
Stability evaluation

X-ray Imaging

Standing X-rays with flexion and extension views show the degree of slippage and any instability with movement.

Slippage measurement
Instability assessment
Grading determination

MRI and CT Scans

Advanced imaging reveals nerve compression, disc health, and helps plan surgical approach when needed.

Nerve compression evaluation
Disc condition assessment
Surgical planning

Conservative Treatment

Many cases of spondylolisthesis, especially low-grade slips, can be managed successfully without surgery through comprehensive conservative care.

Physical Therapy

Core strengthening and flexibility exercises to stabilize the spine

Bracing

Lumbar support braces to limit motion and provide stability

Medications

Anti-inflammatory drugs and muscle relaxants for pain management

Activity Modification

Avoiding activities that worsen symptoms while maintaining fitness

Injections

Epidural steroid injections to reduce nerve inflammation

Monitoring

Regular X-rays to track any progression of the slippage

When does spondylolisthesis need surgery?

Surgery is recommended for high-grade slips (Grade III–V), documented progression on serial X-rays, persistent pain after 6 months of guided conservative care, or neurological symptoms including progressive weakness, numbness, or bowel or bladder changes.

Red flags that point toward surgery

High-grade slip (Grade III or above): When more than 50% of the vertebral body has slipped forward, the risk of further progression and nerve compression increases substantially.
Documented progression on serial X-rays: When follow-up imaging shows the slip is actively worsening, surgery may prevent more complex problems later.
Progressive neurological deficits: Development of foot drop, worsening leg weakness, or numbness that does not respond to conservative treatment.
Bowel or bladder dysfunction: Cauda equina syndrome is a surgical emergency — seek immediate evaluation if you lose control of bowel or bladder function.
Intractable pain: Persistent, function-limiting pain that has not improved after a comprehensive, well-structured conservative care program lasting at least 6 months.

When conservative care has been given a fair trial

A meaningful conservative trial for spondylolisthesis typically includes core-focused physical therapy to strengthen the stabilizing muscles around the slipped vertebra, activity modification to avoid extension-based movements that can worsen symptoms, bracing for temporary support in select cases, and epidural steroid injections for nerve-related leg pain. Regular monitoring with serial X-rays tracks whether the slip is stable or progressing. Conservative care is not considered to have failed simply because some pain persists — it has failed when function remains substantially impaired and quality of life is meaningfully diminished despite a genuine, consistent effort.

What spondylolisthesis surgery involves

Spondylolisthesis surgery typically combines two elements: decompression and fusion. Decompression (lumbar laminectomy) removes bone and ligament to create space for compressed nerves. Fusion (typically TLIF or PLIF) stabilizes the slipped vertebra by placing screws and rods, with bone graft material that promotes the vertebrae to grow together into one solid piece over 3–6 months. Robotic-assisted techniques improve the precision of screw placement. Most fusion procedures for spondylolisthesis are performed through a posterior approach with a hospital stay of 1–3 days. Recovery involves a graduated return to activity, with desk work often possible within 2–4 weeks and full physical activity within 3–6 months.

Surgical options for spondylolisthesis in Fort Wayne

The right surgical approach depends on your slip grade, stability, nerve compression pattern, age, and treatment goals — all of which should be discussed during a one-on-one consultation with Dr. Greenberg.

When to Consider Surgery

Surgery is recommended for high-grade slips, progressive slippage, persistent symptoms after conservative treatment, or when neurological problems develop. If you have been told you need spondylolisthesis surgery, a second-opinion consultation can help review your imaging, your symptoms, and the proposed plan.

Surgical Indications

High-grade slips (Grade III–V)
Progressive slippage on X-rays
Persistent pain after 6 months of conservative care
Neurological symptoms (weakness, numbness)

Why Greenberg Spine

Our advanced surgical approach includes:

Robotic-assisted precision for optimal screw placement
Minimally invasive techniques when possible
Motion-preserving options for select cases
Outpatient procedures when appropriate

Lumbar Fusion (TLIF/PLIF)

Stabilization procedure to prevent further slippage and relieve symptoms.

Robotic Spinal Fusion

Precision robotic-assisted fusion for optimal screw placement and alignment.

Lumbar Laminectomy

Decompression procedure often combined with fusion for spondylolisthesis.

Recovery Expectations

Conservative Treatment

Recovery focuses on strengthening and stabilizing the spine while monitoring for any progression of the slip.

Weeks 1–4

Pain management and gentle movement

Weeks 4–12

Progressive strengthening and stability training

3–6 Months

Return to activities with ongoing monitoring

Surgical Recovery

Weeks 1–6

Initial healing and gradual mobilization

Weeks 6–12

Physical therapy and activity progression

3–6 Months

Bone fusion completion and full activity return

Learn more about related conditions and treatments

Lumbar Fusion (TLIF/PLIF)

Lumbar Laminectomy

Spinal Stenosis

Degenerative Disc Disease

Why Your Legs Hurt When You Walk

Request a Second Opinion

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Schedule a consultation with Dr. Greenberg to explore both conservative and surgical treatment options.

Spondylolisthesis