Predictors of Outcomes Following Lumbar Intra-articular Facet Joint Injections and Medial Branch Blocks: A Scoping Review.

A myriad of factors were analyzed in the thirty-seven studies included in this review. Imaging findings of facet arthropathy, duration of pain, and positive SPECT were consistently associated with favorable results following facet interventions. Future prospective studies should include control groups. Clinicians may find these results useful in deciding whether to recommend facet injections.