Which IM injection site is considered the safest to minimize nerve injury in adults?

• A. Dorsogluteal
• B. Ventrogluteal
• C. Deltoid
• D. Vastus lateralis

Answer: (B)

The safest IM injection site to minimize nerve injury in adults is the ventrogluteal region. This area sits in the gluteal muscle between the gluteus medius and minimus, away from the major nerves and vessels that run near other gluteal sites, especially the sciatic nerve. Because the needle path through ventrogluteal injections avoids those large nerves, the risk of nerve injury is lower.

To locate it, place the heel of one hand on the patient’s hip with the fingers pointing toward the anterior superior iliac spine and the middle fingers on the greater trochanter, forming a “V” shape. The injection goes in the center of that V, into the gluteus medius muscle.

Dorsogluteal injections sit closer to the sciatic nerve and vessels and can be hard to landmark reliably, which raises nerve injury risk. Deltoid injections use a small muscle where volumes are limited and the axillary nerve (and vessels) can be injured if the needle goes too deep or high. Vastus lateralis is generally safe, especially in infants, but in adults it’s less favored for large-volume or repeated injections when aiming to minimize nerve risk, because the landmarking is less consistent and it still requires careful technique.

So, ventrogluteal injection, when performed with proper landmarks, offers the best balance of safety and effectiveness for minimizing nerve injury in adults.