Figure 3.

Annotated digital subtraction angiogram (DSA) depicting the genicular artery embolization with red arrowheads identifying radiopaque marker for the painful area. (a) Proximal popliteal artery early-phase angiogram showing the descending genicular artery (DGA), superior lateral genicular artery (SLGA), superior medial genicular artery (SMGA), medial sural artery (MSA), inferior lateral genicular artery (ILGA), and inferior medial genicular artery (IMGA); (b) delayed phase of DSA with inflammatory blush surrounding the painful areas identified with radiopaque markers (red arrowheads); (c) selective post-embolization DSA of SMGA; (d) selective post-embolization DSA of ILGA, since it was back supplying the SMGA angiozone; and (e) final post-embolization DSA from popliteal artery showing resolution of the inflammatory blush.