The two most commonly affected lumbar facet joints are L4–L5 and L5–S1, so the nerves innervating these joints — the L3 and L4 medial branches and the L5 dorsal ramus — are most frequently ...

Last month we discussed that the higher level (L1-L2, L2-L3 and L3-L4) lumbar disc herniations present significantly different than the more common lower level (L4-L5 and L5-S1) lumbar disc ...

The sciatic nerve originates from the spinal nerves L4, L5, S1, S2, and S3. Your sciatic nerve extends lower than your vertebrae, and all these nerve fibers join and make the sciatic nerve.

Lumbar Spinal Stenosis: T2-weighted MRI of the Lumbar Spine; (Left) Mid-sagittal view; (Right Top) Axial scan at the mid-L3 level; (Right Bottom) Axial scan at the L3-L4 disk level.Note the central ...

Let’s go back to our example of a procedural note stating medial branch blocks of the L3, L4 and L5 nerves. The L3, L4 and L5 medial branch nerves innervate the L4-L5 and L5-S1 facet joint. We would ...

Schwannoma: MRI Scans of the Lumbar Spine; (Left Top) T1-weighted axial; (Left Middle) T1-weighted with gadolinium axial; (Left Lower) T2-weighted axial; (Middle) T2-weighted mid-sagittal; (Right) ...

Dear Dr. Roach: I suffered a lower back injury in 2001, with crushed and bulging discs in the L2, L3, L4 and L5 vertebras. After over a year of physical therapy and drugs, my pain doctor tried an ...