Your lumbar spine consists of the five bones (vertebra) in your lower back. Your lumbar vertebrae, known as L1 to L5, are the largest of your entire spine. Your lumbar spine is located below your 12 chest (thoracic) vertebra and above the five fused bones that make up your triangular-shaped sacrum bone.
Feb 17, 2022
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Jul 30, 2023 · The lumbar region contains five vertebrae, denoted L1-L5. The intervertebral discs, along with the laminae, pedicles, and articular processes of ...