What does "Spinal process of L5 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.
The "spinal process of L5 to S1" refers to a specific part of the spine. The spine is made up of many small bones, and L5 and S1 are labels for two of these bones. L5 is the last bone in the lower back area, while S1 is the first bone in the sacral region, which is located at the base of the spine. The "spinal process" is a bony projection off the back of each vertebra, and the phrase "spinal process of L5 to S1" refers to the area between these two specific bones.
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