Fig. 3.
(A) The suture-needle is advanced under the sciatic nerve (SN) and normal saline (NS) is used to hydrodissect between the nerve and the underlying fascia. (B) Needle, NS, and SN are diagramed. (C) After withdrawing the needle to the lateral border of the nerve, NS is then used to hydrodissect between the SN and the overlying fascia. (D) SN, NS, and needle are diagramed. (E) Echogenic markings on the catheter are used to properly position the orifice directly adjacent to the SN. (F) The catheter with its echogenic markings are diagramed. (G) After placing the orifice adjacent to the SN, NS is used to confirm location. (H) Orifice, NS, and SN are diagramed.