A 40-year-old woman presented to the office due to difficulty walking. Three days ago, the patient has received a left-sided intramuscular injection in the buttock. Later, she developed difficulty walking. On examination, there is no erythema or edema at the injections site. The patient has full strength against resistance on the knee and ankles' plantar flexion. When the patient is asked to walk, the right hip drops every time he raises his right foot. The patient has received the injection at which of the following sites?

Question

Quizplus · Accepted Answer

Eductional Objective: The superior gluteal nerve is at high risk for injury in the injections given in the superomedial portion of the buttock. Superior gluteal nerve injury leads to gluteus medius weakness manifesting as abnormal gait known as Trendelenburg gait. The safe site for intramuscular injections is on the superolateral side of the buttock.

A 40-Year-Old Woman Presented to the Office Due to Difficulty