Lumbarisation & Sacralisation

Lumbarisation and Sacralisation are anatomical variations of the vertebral column, where there are changes in the number or structure of the lumbar and sacral vertebrae. These variations can affect the spine's stability, alignment, and function, often leading to discomfort or pain

1. Lumbarisation

Lumbarisation is an anomaly where the first sacral vertebra (S1) fails to fuse with the second sacral vertebra (S2) and instead behaves more like a lumbar vertebra.

Causes:

• It’s a congenital anomaly, meaning it’s present at birth and can be inherited.
• Often, there is no specific cause other than developmental irregularities during fetal growth.

Symptoms:

• May cause low back pain, sciatica, or muscle imbalances.
• In some cases, no symptoms are present, and it’s discovered incidentally during imaging.

2. Sacralisation

Sacralisation is an anomaly where the last lumbar vertebra (L5) fuses with the first sacral vertebra (S1), resulting in fewer lumbar vertebrae (sometimes only four lumbar vertebrae).

Causes:

• Sacralisation is typically a congenital anomaly, often seen in people with a genetic predisposition for spine abnormalities.
• It can also develop due to chronic mechanical stress on the lower back.

Symptoms:

• May cause lower back pain, reduced flexibility, muscle imbalances, and pressure on nearby nerves.
• Often discovered incidentally during imaging for other back issues.