Relating to the lower back region, specifically the five lumbar vertebrae (L1-L5) located between the thoracic spine and the sacrum. This area bears much of the body's weight and is commonly affected by back pain.
From Latin 'lumbus' meaning loin or lower back. The term has been used in anatomy since ancient times to describe this weight-bearing region of the spine.
Your lumbar spine is an engineering marvel that supports up to 10 times your body weight during lifting! The natural inward curve (lordosis) acts like a spring, but modern sitting habits often flatten this curve, contributing to the epidemic of lower back pain.
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