Abstract

Lumbar zygapophysial (z-joint) pain is common. Medial branch blocks are the only validated test for the diagnosis of painful z-joints, and dual comparative medial branch blocks are currently recommended to accurately diagnosis painful z-joints and help reduce the false positive rate associated with interventional procedures. Intra-articular injection of corticosteroids is a common treatment suspected z-joint pain. No studies to date evaluate the efficacy of intra-articular corticosteroids in those with dual comparative medial branch block confirmed z-joint pain.

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