What does "L4 and L5 roots" 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 "L4 and L5 roots" refer to specific parts of the spinal cord. The spinal cord is like a big cable that carries messages between your brain and the rest of your body. The "L4" and "L5" are labels for two spots in the lower part of this cable, near your waist. The "roots" are like smaller cables that branch off from these spots to carry messages to and from specific parts of your body.
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