What does "L3-L4 space" 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 "L3-L4 space" refers to the area between the third and fourth lumbar vertebrae in the lower back. These are the large bones that make up the spine. Doctors often refer to this space when discussing issues related to back pain, spinal surgery, or procedures like spinal taps, where a needle is inserted into the space to collect fluid or deliver medication.
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