Final answer:
To locate the landmark for an intramuscular injection in the dorsogluteal site, use the iliac crest as a guide. The injection site is located in the upper outer quadrant of the gluteus medius muscle.
Step-by-step explanation:
To locate the landmark for an intramuscular injection in the dorsogluteal site, you can use the iliac crest as a guide. The iliac crest is the curved, superior margin of the ilium and can be felt along the waistline. The anterior superior iliac spine, which is the rounded, anterior termination of the iliac crest, can be felt at the anterolateral hip. The injection site is located in the upper outer quadrant of the gluteus medius muscle, which is approximately 5 cm below the iliac crest and 7 to 8 cm lateral to the sacrum.