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The dorsogluteal muscle is one of the four sites for an intramuscular injection, which is a technique used to deliver medication deep into the muscles. It is the large muscle located in the buttocks and is one of the largest muscles in the body. The dorsogluteal muscle was the site most commonly selected by healthcare professionals for many years. However, due to the potential for injury to the sciatic nerve, the ventrogluteal muscle is now the preferred site.
| Characteristics | Values |
|---|---|
| Location | Large muscle in the buttocks |
| Injection site | Divide one butt cheek into fourths from top to bottom and side to side. Inject in the outer, upper quadrant toward the hip. |
| Injection technique | Confirm restricted side-to-side movement of the needle. Aspirate for at least 5-10 seconds before injecting. Inject slowly (10 seconds per milliliter) to allow for muscle fibre stretching and drug retention. |
| Risks | Potential for injury to the sciatic nerve |
| Self-injection | Difficult due to location. Requires assistance from a partner, friend, family member, or caregiver. |
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What You'll Learn
Injection sites
Intramuscular injections are a technique used to deliver medication deep into the muscles, allowing the bloodstream to absorb the medication quickly. They are often used when other types of delivery methods are not recommended. For example, some drugs are irritating to veins, or a suitable vein cannot be located.
The dorsogluteal muscle is located in the buttocks. The dorsogluteal site is one of the most complicated regions for intramuscular injections. It has many veins and is close to the important sciatic nerve that runs from the lower back down the legs. Due to the potential for injury to the sciatic nerve, injections are now more commonly administered into the ventrogluteal muscle of the hip instead. This site is difficult for self-injection and may require the help of a friend, family member, or caregiver.
To locate the ventrogluteal site, place the heel of your hand on the hip of the person receiving the injection, with your fingers pointing toward their head. Position your fingers so your thumb points toward their groin and you feel the pelvis under your little finger. Spread your index and middle fingers in a slight V shape, and inject the needle into the middle of that V. This site is considered safe for adults and children older than 7 months.
Other injection sites include the deltoid muscle in the upper arm near the shoulder, the vastus lateralis muscle in the thigh, and the hip. The deltoid muscle is the most common site for vaccines but can only receive small volumes of medication (usually 1ml or less). The vastus lateralis muscle is often used by people who need to self-administer injections. To locate the correct spot, imagine dividing the thigh vertically into three equal parts and inject into the outer top part of the middle section.
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Sciatic nerve injury risk
The dorsogluteal muscle is located in the upper outer quadrant of the buttock. For many years, it was the site most commonly selected by healthcare professionals for intramuscular injections. However, due to the potential for injury to the sciatic nerve, the ventrogluteal muscle is now the preferred site.
Sciatic nerve injury can occur due to trauma (pressure, stretching, or cutting) to the nerve and can cause symptoms such as paresthesias, loss of muscle power, and pain. These symptoms are similar to those caused by sciatica, but sciatica typically refers to conditions where the sciatic nerve is irritated or compressed rather than directly injured.
Intramuscular injections are a technique used to deliver medication deep into the muscles, allowing for quick absorption into the bloodstream. While the dorsogluteal site is an inviting location for injections due to its obvious muscle bulk, it poses a risk of sciatic nerve injury. This risk is especially prominent in the gluteal region, where injection injuries can result in a loss of movement and/or lack of sensation in the affected lower extremity, with or without pain.
To prevent sciatic nerve injury during intramuscular injections, the ventrogluteal muscle is recommended as a safer alternative. It is located between the iliac crest, greater trochanter of the femur, and anterior superior iliac spine. This site has a shallower muscle depth but is farther from neurovascular structures, reducing the risk of damaging the sciatic nerve.
In the event of a sciatic nerve injury, treatment options such as physiotherapy, balance training, and bracing may be employed to retain muscle flexibility, improve coordination, and prevent deformity. Good clinical judgement, decision-making skills, and experience are crucial for effective rehabilitation. Additionally, proper documentation during consultations is essential, as it can play a vital role in defending against any potential legal action.
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Intramuscular injections
The dorsogluteal muscle, located in the buttocks, was historically the most common site for intramuscular injections. However, due to the potential risk of injury to the sciatic nerve, it is no longer routinely used. The dorsogluteal muscle is challenging to access for self-injection and requires specific training and education to inject safely.
The ventrogluteal muscle of the hip is now considered a safer alternative for adults and children over seven months. This site is also relatively thick and located away from major nerves and blood vessels. To locate the ventrogluteal muscle, place the heel of your hand on the hip, with your fingers pointing towards the person's head. Position your thumb towards their groin, and your pinky finger should feel the pelvis. Create a 'V' shape with your index and middle fingers, and inject the needle into the middle of the 'V'.
When administering an intramuscular injection, it is important to confirm the correct positioning of the needle within the muscle. This can be done by checking for restricted side-to-side movement. Aspirating the syringe contents for 5 to 10 seconds before injecting the medication can also help ensure correct placement. Injecting slowly, at a rate of 10 seconds per millilitre, allows the muscle fibres to stretch and retain the drug, minimising the risk of leakage.
After the injection, it is normal to experience some discomfort and slight bleeding. Applying light pressure with gauze and massaging the area can help with absorption and reduce discomfort.
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Muscle anatomy
Intramuscular injections are a common practice in modern medicine, used to deliver drugs and vaccines. They are one of the most common medical procedures performed annually. These injections are used to deliver medication deep into the muscles, allowing the bloodstream to absorb the medication quickly.
The dorsogluteal muscle is a large muscle located in the buttocks. It is one of the largest muscles in the body. To find the dorsogluteal muscle, one must divide one butt cheek into fourths from top to bottom and side to side. The injection should be given in the outer, upper quadrant toward the hip. This is the part of the buttocks with the least fatty tissue.
The dorsogluteal muscle was the site most commonly selected by healthcare professionals for many years. However, due to the potential for injury to the sciatic nerve, the ventrogluteal muscle is most often used instead. The ventrogluteal muscle is located near the hip and is the safest site for adults and children older than 7 months. It is deep and not close to any major blood vessels or nerves.
The deltoid muscle of the upper arm is also a common site for intramuscular injections, especially for vaccines. However, this site is not common for self-injection as its small muscle mass limits the volume of medication that can be injected. It is also difficult to use this site for self-injection. The vastus lateralis muscle is another preferred site for intramuscular injections, especially for infants and babies who are not yet walking.
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Injection techniques
Intramuscular injections are used to deliver medication deep into the muscles, allowing the bloodstream to absorb the medication quickly. This method is often used to administer vaccines and certain drugs. The dorsogluteal muscle, located in the buttocks, was a commonly selected site for intramuscular injections for many years.
Preparation
- Wash hands thoroughly with soap and warm water, paying attention to the area between the fingers and under the fingernails.
- Cleanse the injection site and allow it to dry completely. You can use alcohol or an antiseptic swab for cleansing.
- Optional: Use a vapocoolant spray, such as ethyl chloride, for pain relief just before the injection.
Locating the Dorsogluteal Muscle
- Place the heel of your hand on the hip of the person receiving the injection, with your fingers pointing toward their head.
- Position your fingers so your thumb points toward their groin, and you should feel the pelvis under your pinky finger.
- Spread your index and middle fingers in a slight V shape, and the injection should be administered into the middle of that V.
Injection Technique
- After locating the correct site, inject the needle deep into the muscle and inject the medication slowly.
- The Z-track method can be used to prevent medication leakage and minimise irritation. This involves pulling the skin laterally before injection and sealing the medication in the muscle.
- After withdrawing the needle, release the skin. The displacement of the skin and muscle layer will close off the needle track.
It is important to note that the dorsogluteal muscle is not recommended as an injection site due to its proximity to the sciatic nerve. If a needle hits the sciatic nerve, it can cause partial or permanent paralysis of the leg. Therefore, people should avoid self-administering injections into the dorsogluteal muscle, and it is advised to seek training and education from a healthcare professional before attempting any intramuscular injections.
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Frequently asked questions
The dorsogluteal muscle is located in the buttocks.
The dorsogluteal muscle is a large muscle and is easily located, making it a preferred choice for intramuscular injections.
There are major blood vessels and nerves located in the dorsogluteal muscle, including the sciatic nerve. This means there is a risk of nerve injury.
Yes, the four main sites for intramuscular injections are the shoulder, hip, thigh, and buttock.
