The deltoid intramuscular injection site is the preferred site to administer vaccines for infants that are older than 7 months and this is the only site where the Hepatitis B vaccine can be given. The advantages of the deltoid intramuscular injection is that as said before is easy accessible and patients are generally a lot more comfortable with exposing their arms as opposed to another body area. Unlike the ventrogluteal injection, a tourniquet can be applied if a hypersensitivity reaction occurs after a deltoid intramuscular injection. Disadvantages to this site are the size of the muscle mass is small in relation to other IM injection sites. The deltoid intramuscular injection is closely associated with nerves and vascular structures; this leaves a small margin for error with departure from the correct IM injection site. A deltoid intramuscular injection is not an apt site for repeated or large-volume injections exceeding .
Median Nerve at the Elbow: Pronator Syndrome . The pronator teres muscle in the forearm can compress the median nerve, which may cause symptoms that mimic carpal tunnel syndrome. Symptoms are discomfort and aching in the forearm with activities requiring repetitive pronation of the forearm, especially with the elbow extended. Paresthesias in the thumb and first two digits may be present. Forearm sensation is normal, and sensation of the digits may also be normal. In pronator syndrome, there is sensory loss over the thenar eminence, which is not a finding of carpal tunnel syndrome. Results of the Tinel sign and Phalen maneuver at the wrist should be negative in patients with pronator syndrome. 13
How often cortisone injections are given varies based on the reason for the injection. This is determined on a case-by-case basis by the health care practitioner. If a single cortisone injection is curative, then further injections are unnecessary. Sometimes, a series of injections might be necessary; for example, cortisone injections for a trigger finger may be given every three weeks, to a maximum of three times in one affected finger. In other instances, such as knee osteoarthritis, a second cortisone injection may be given approximately three months after the first injection, but the injections are not generally continued on a regular basis.