A member asked:

Does anyone know about transitional lumbar anatomy?

4 doctors weighed in across 2 answers
Dr. Larry Armstrong answered

Specializes in Neurosurgery

Extra vertebrae: Some people have an extra vertebrae in their lumbar spine (low back). It doesn't cause any problems but does give an extra disk/joint that sometimes can cause pain.

Answered 12/25/2014


Dr. Brian Sabb answered

Specializes in Sports Medicine

Most of the time (in a majority of people) there are 5 lumbar vertebrae. In a minority of people there are variations (developmental or congenital variant) in which there can be 4 or 6 lumbar vertebrae. While it is debated in the medical community, I am a firm believer that variant anatomy can be a cause of pain due to biomechanical changes and increased stress on adjacent discs and the SI joints

Answered 7/29/2022



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