To prevent injury to axillary nerve, which is located in the relatively upper part of deltoid.
Deltoid
injections are normally given in the deltoid muscle which attaches to itself to the scapula and acromion
it is the ladmark used in giving deltoid injections.
Intramuscular (IM) injections are typically given in one of three muscles. These muscles are the vastus lateralis, or thigh muscle, the ventrogluteal, or hip muscle, and the deltoid, or upper arm muscle.
see http://www.crvetcenter.com/injection.htm
The landmark for intramuscular injections is the acromion process. The actually injection site should be several centimeters away from the process, on the deltoid muscle.
Deltoid, Vastus Lateralis, Gluteus Medius, Gluteus Maximus
It can be given in the deltoid or gluteus muscles.
2 ml is the standard for the deltoid muscle this answer is according to the NLN
(cortizone) injections or (kenalog injections) can be given systemically to help reduce arthritis flares.
The number or injections that can safely be given is dependant on the patient's weight and the amount of Lidocaine you plan to administer.
Any medications administered by intramuscular injection.