Final answer:
The anatomic landmarks for an infragluteal sciatic block include the greater trochanter and the ischial tuberosity. These landmarks help guide the placement of the nerve block for effective anesthesia.
Step-by-step explanation:
The anatomic landmarks for an infragluteal sciatic block are identified to ensure correct nerve localization and anesthetic placement. The relevant landmarks include the greater trochanter of the femur, which serves as a palpable bony prominence on the lateral aspect of the hip; and the ischial tuberosity, the large, roughened area of the ischium that bears body weight when a person is sitting. To efficiently perform an infragluteal sciatic nerve block, a practitioner would palpate these landmarks to guide the placement of the block.