Bertolotti’s Syndrome is a congenital condition affecting the lumbar spine, specifically characterized by a lumbosacral transitional vertebra (LSTV). This anatomical anomaly occurs when the lowest lumbar vertebra (usually L5) partially or fully fuses with the sacrum. Only when this pseudo-joint becomes painful and symptomatic is it classified as Bertolotti’s Syndrome.

Disrupted Biomechanics and Causes

The lumbar spine is designed to bear weight and provide flexibility. However, in Bertolotti’s Syndrome, the fusion disrupts the normal weight distribution across the pelvis. This creates a mechanical imbalance: the fused level becomes stiff, causing the spinal segments above it to move excessively to compensate. This added stress frequently leads to premature degeneration, disc herniation, and strain on the facet joints.

Recognizing the Symptoms

Symptoms often do not manifest until adulthood, typically in patients in their 20s or 30s, leading to delayed diagnosis. Patients often report chronic, daily lower back pain that may be unilateral (one-sided) or bilateral. Common symptoms include:

• Pain radiating to the buttocks, groin, or hips.
• Stiffness and reduced range of motion.
• Pain that worsens with extension or prolonged sitting but improves when lying down.

Because these symptoms mimic sciatica or general degenerative disc disease, identifying the specific pain generator-whether it is the disc, facet joint, or the pseudo-articulation itself-is crucial.

Management and Treatment

Managing Bertolotti’s Syndrome requires a multidisciplinary approach focusing on relieving pain and improving function. Initial treatment involves physical therapy, lifestyle modifications like weight management, and steroid injections to reduce inflammation and verify the source of pain.

If conservative therapies fail, surgical options such as resection (removing the fused bone) or spinal fusion may be considered to address nerve impingement and restore stability. Advanced, minimally invasive techniques are increasingly supported for their favourable outcomes and reduced recovery times.