What is the correct posture of intramuscular injection of gluteus maximus in supine position?

Posture: In order to relax muscles and relieve pain and discomfort during gluteal muscle injection, the commonly used postures are:

1: In lateral position, the thighs are straight and relaxed, and the calves are slightly flexed.

2. Prone position, requiring toes to be opposite, heels to be separated, and head to one side.

3. Supine position, used for injecting gluteus medius muscle and gluteus minimus, commonly used for critically ill patients and patients who can't turn over on their own.

4. Sitting position, the chair should be slightly higher to facilitate operation, which is often used for outpatient and emergency patients.