What does "L4-5" 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.
"L4-5" refers to the area between the fourth and fifth lumbar vertebrae in the lower back. This is a common place where the spine can experience issues because it carries a lot of the body's weight. In medical reports, it's often used to pinpoint where specific problems, like disc bulges or narrowing spaces, are happening.
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