1. The document discusses the equipment needed for a lumbar plexus block, including sterile towels, syringes containing local anesthetic, sterile gloves, a marking pen, surface electrode, a 1.5 inch sterile needle for skin infiltration, a 10 cm long stimulator needle, and a peripheral nerve stimulator. 2. It references four sources on ultrasound-guided lumbar plexus blocks and peripheral nerve blocks, including journal articles and textbooks. 3. The document provides a list of references for lumbar plexus blocks and peripheral nerve blocks.