What does "Approximate level of L3 to S1" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
"Approximate level of L3 to S1" refers to a specific area of the spine. The spine is divided into different sections, and each section is labeled with a letter and a number. L3 to S1 refers to the area from the third lumbar vertebrae (around the middle of the lower back) to the first sacral vertebrae (near the bottom of the spine). This term is often used in medical contexts to describe where a problem or procedure is located on the spine.
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