Indications

The indications for performing a facet joint injection are twofold, diagnostic and therapeutic. Intraarticular injection of a local anesthetic can provide diagnostic infor-

Synovial Fluid Facet Joint

Fig. 4. (A) Axial T2-weighted MR image demonstrating normal appearing facet joints. Notice the high signal intensity from the synovial fluid in the joint. (Note the disc herniation [arrowhead]). (B) Axial T1-weighted MR image demonstrating degenerative hypertrophic facet joint changes at the L4 level in a symptomatic patient.

Fig. 4. (A) Axial T2-weighted MR image demonstrating normal appearing facet joints. Notice the high signal intensity from the synovial fluid in the joint. (Note the disc herniation [arrowhead]). (B) Axial T1-weighted MR image demonstrating degenerative hypertrophic facet joint changes at the L4 level in a symptomatic patient.

Hypertrophic Facet Joint

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