Equipment for Posterior Elbow Dislocation Reduction Materials and personnel required for procedural sedation and analgesia (PSA) Intra-articular anesthetic (eg, 5 mL of 2% lidocaine, 10-mL syringe, 2-inch 20-gauge needle), antiseptic solution (eg, chlorhexidine, povidone iodine), gauze pads Posterior arm splint materials and sling One assistant is needed.