▁tro chan ter , ▁with ▁the ▁fingers ▁facing ▁the ▁patient ' s ▁head . ▁The ▁right ▁hand ▁is ▁used ▁for ▁the ▁left ▁hip ▁and ▁left ▁hand ▁is ▁used ▁for ▁the ▁right ▁hip . ▁Place ▁the ▁index ▁finger ▁on ▁the ▁anterior ▁superior ▁il iac ▁sp ine ▁and ▁run ▁the ▁middle ▁finger ▁back ▁along ▁the ▁il iac ▁cr est . ▁The ▁injection ▁is ▁given ▁in ▁the ▁center ▁of ▁the ▁triangle ▁that ▁is ▁formed . ▁ ▁V ast us ▁later alis ▁mus cle ▁ ▁The ▁vast us ▁later alis ▁site ▁is ▁recommended ▁for ▁inf ants ▁less ▁than ▁ 7 ▁months ▁old ▁and ▁those ▁unable ▁to ▁walk , ▁with ▁loss ▁of ▁mus cular ▁tone . ▁To ▁locate ▁the ▁site , ▁divide ▁the ▁front ▁th igh ▁into ▁third s ▁vert ically ▁and ▁hor izont ally ▁to ▁make ▁nine ▁squares ▁and ▁inject ▁in ▁the ▁outer ▁middle ▁square . ▁▁ ▁It ▁is ▁also ▁recommended ▁for ▁ep ine phr ine ▁auto inject ors , ▁in ▁such ▁cases ▁in ▁the ▁middle ▁of ▁the ▁outer ▁side ▁of ▁the ▁th igh , ▁corresponding ▁to ▁the ▁location ▁of ▁the ▁vast us ▁later alis ▁mus cle . ▁ ▁D ors og l ute al ▁site ▁The ▁d ors og l ute al ▁( but to ck ) ▁site ▁is ▁not ▁recommended ▁for ▁use ▁in ▁any ▁patient ▁population ▁due ▁to ▁its ▁location ▁near ▁major ▁blood ▁vessels ▁and ▁n erves , ▁as ▁well ▁as ▁having ▁incons istent ▁depth ▁of ▁ad ip ose ▁t issue , ▁with ▁very ▁few ▁in jections ▁in ▁this ▁area ▁inject ed ▁to ▁the ▁correct