In clinical practice, tetanus shots are widely used, especially if the wound at the injured site is deep, it is advised to go to the hospital for an injection of tetanus antitoxin. Before injecting the tetanus antitoxin, a skin test must be conducted. Common practice for skin tests involves creating a small bump on the forearm; if the bump does not enlarge, if there is no local infiltration or redness, and if the patient feels no itch, then it is safe to proceed with the intramuscular injection of the tetanus antitoxin. The injection site is usually chosen on the deltoid muscle of the upper arm or the muscles of the buttocks. After disinfection, the injection can be administered directly at these locations. This describes the injection sites for tetanus.