What does "Patient's L3-L4 interspace" 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 interspace" refers to the space between the third and fourth lumbar vertebrae in the spine. These vertebrae are located in the lower back, just above the hip area. Doctors often refer to this area when discussing back pain, spinal surgery, or procedures like spinal taps, where a needle is inserted into the space to collect fluid. It's called an "interspace" because it's the space "between" two vertebrae.
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