You are here Home Resources Handbook figures Handbook figures Figure. Anatomical markers used to identify the deltoid injection site Listen Print Share Twitter Facebook Email Figure. Anatomical markers used to identify the deltoid injection site Show description of image Figure showing the anatomical markers used to identify the deltoid injection site. The deltoid is a large rounded triangular shape on the outside of the upper arm, on top of the humerus, the clavicle and the scapula. The brachial artery and the radial nerve sit behind the deltoid and come down from the muscle. The injection site is a smaller triangle-shaped area, in the middle of the deltoid, above the deltoid tuberosity. Also see Shoulder injury related to vaccine administration (SIRVA) – How to prevent SIRVA at the Melbourne Vaccine Education Centre. These files may not be suitable for users of assistive technology. Request an accessible format Your email address (required) Request an accessible format (required) Leave this field blank Related chapters Vaccination procedures Administration of vaccines Page history Last updated 30 June 2023 Last reviewed 30 June 2023 Is there anything wrong with this page? Help us improve the Australian Immunisation Handbook What you were doing? (required) What went wrong? (required) Leave this field blank