ConditionsLumbar Spondylolisthesis

Lumbar Spondylolisthesis

A condition where one vertebra slips forward, causing instability and nerve compression. Dr. Basques provides expert surgical care using minimally invasive fusion techniques.

Spondylolisthesis occurs when one vertebra slips forward relative to the vertebra below it, causing spinal instability. The most common types are degenerative (from arthritis and disc degeneration, most common at L4-L5) and isthmic (from a stress fracture in the pars interarticularis, more common at L5-S1 in younger patients). This abnormal movement can compress nerve roots, causing back and leg pain that worsens with activity and improves with rest. While many patients manage successfully with non-surgical care, those with progressive slippage, severe pain, or neurological deficits may require surgical stabilization. Dr. Basques performs minimally invasive lumbar fusions that stabilize the slipped vertebra through small keyhole incisions, preserving muscle and enabling faster recovery.

Common Symptoms

Lower back pain worsened by activity
Leg pain or sciatica
Tight hamstrings
Pain relieved by lying down or resting
Numbness or tingling in legs
Visible step-off in severe cases

Diagnosis

Weight-bearing X-rays (standing flexion-extension views) are essential to evaluate the degree of slippage and instability. MRI assesses nerve root compression and the condition of the discs. CT scans provide detailed bony anatomy for surgical planning. Dr. Basques grades the spondylolisthesis (Grade I–V) based on the percentage of vertebral slippage.

Treatment Options

Dr. Basques always starts with the least invasive treatment appropriate for your condition.

Non-Surgical Treatments

Physical therapy — core strengthening and hamstring stretching
Anti-inflammatory medications
Epidural steroid injections
Activity modification
Bracing (rarely, for acute isthmic cases)

Surgical Options

Get a Personalized Treatment Plan

Dr. Basques will evaluate your condition and recommend the most advanced, least invasive approach. Serving Rhode Island, Massachusetts, Connecticut, and all of New England.

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