INTRAMUSCULAR (IM) INJECTION SITES
1. First patient: 2-month old well female infant
- Site of injection: The anterolateral thigh muscle
- Targeted muscle: vastus lateralis
- Origin: Greater trochanter and linea aspera of femur.
- Insertion: Patella via quadriceps tendon and then tibial tuberosity via patellar ligament.
- Action: It is responsible for leg extension at knee joint.
- How to locate: The position of the intramuscular injection is indicated by the top border of this muscle being a width below the groin/great trochanter and the bottom border being a breadth above the knee. The side borders, on the other hand, extend from the center of the anterior thigh to the center of the lateral thigh.
2. Second patient: 65-year-old Grandfather
- Site of injection: Upper arm
- Muscle: Deltoid muscle
- Origin: Acromial extremity of clavicle (anterior fibers), acromion of scapula (lateral fibers), and spine of scapula (posterior fibers).
- Insertion: Deltoid tuberosity of humerus.
- Action: At the shoulder joint, lateral fibers abduct the arm, anterior fibers flex the arm and medially rotate it, and posterior fibers stretch the arm and laterally rotate it.
- How to locate: First, locate the Achromion process. Place two fingers horizontally at the Achromion process's bottom (this will act as the triangle's base). Use the other hand to make a peace sign before completing the inverted triangle with it. The center of the triangle will serve as the injection point.
REFERENCES:
Deltoid Intramuscular injection - Everything You Need To Know - Dr. Nabil Ebraheim. (2013). YouTube. Retrieved September 8, 2023, from https://youtu.be/Dzdf2YfOuQw?si=8zapxJ_wRWql4TdT.
Intramuscular injections for neonates. Safer Care Victoria. (n.d.). https://www.safercare.vic.gov.au/clinical-guidance/neonatal/intramuscular-injections-for-neonates#:~:text=The%20anterolateral%20thigh%20is%20the%20preferred%20site%20for%20IM%20injection,middle%20thirds%20of%20this%20muscle.
Tortora, G. J., & Derrickson, B. (2017). The Muscular System . In Principles of anatomy and physiology (15th ed., pp. 357–413). essay, Wiley Custom Learning Solutions.
Vastus Lateralis Intramuscular Injection - Everything You Need To Know - Dr. Nabil Ebraheim. (2018). YouTube. Retrieved September 8, 2023, from https://youtu.be/XFog6uSwbuw?si=vCBxeMXIRyqGavoy.