The safest place to give an intramuscular steroid shot in the buttocks is the ventrogluteal site, located on the upper outer hip rather than the fleshy center of the buttock most people picture. This distinction matters because the traditional spot people think of when they hear “butt injection” sits over the sciatic nerve and the gluteal artery, while the ventrogluteal site avoids both. The science backing this preference is strong, yet a surprising number of healthcare workers still default to the older, riskier location.
Two Sites, Two Very Different Risk Profiles
When people say “buttock injection,” they usually mean one of two anatomical zones. The dorsogluteal site is the classic one: the upper outer quadrant of the large fleshy part of the buttock. For decades, this was the default injection spot taught in nursing and medical programs. The ventrogluteal site sits higher and more to the side, over the gluteus medius and gluteus minimus muscles on the lateral hip. It feels less like the “butt” and more like the hip, which is why many patients are confused when a nurse positions them for an injection there.
The ventrogluteal site is preferred because it has a thicker muscle layer, thinner subcutaneous fat, and no major nerves or blood vessels running through it. A study examining tissue thickness in older adults found that while both sites met minimum thresholds for safe intramuscular injection, the ventrogluteal site had greater muscle thickness and lower subcutaneous tissue, making it less likely that the needle would land in fat or hit bone.1PubMed. Examining the Safety of Dorsogluteal and Ventrogluteal Sites for Intramuscular Injection in Older Adults The dorsogluteal site, by contrast, carries a well-documented risk of sciatic nerve injury, a complication that has been reported worldwide and can cause lasting neuropathic pain requiring surgical intervention.2PubMed Central. Iatrogenic Injury to the Sciatic Nerve due to Intramuscular Injection – A Case Report
Finding the Ventrogluteal Site
Locating the ventrogluteal site requires a bit more anatomical awareness than the dorsogluteal, which is probably why many practitioners avoid it. Two main landmark methods exist. The first is the V method: you place the heel of your palm on the greater trochanter (the bony bump at the top of the outer thigh), point your index finger toward the front hip bone, and spread your middle finger back toward the iliac crest. The injection goes into the triangle formed between those two fingers. The second is the G (geometric) method, which uses fixed bony landmarks to define a more precise target area.
Research comparing these two methods found that the geometric approach produced a thicker muscle target and a higher rate of successful intramuscular delivery: about 75% compared with 57% for the V method. Even with the better method, success rates differed sharply by sex. About 92% of men achieved true intramuscular injection, while only 59% of women did, with remaining women at risk of either subcutaneous injection or, in a small percentage, bone contact.3PubMed Central. Gluteal muscle and subcutaneous tissue thicknesses in adults: a systematic review and meta-analysis Those numbers underscore that even the “right” site is not foolproof, and the person giving the injection needs to account for the recipient’s body composition.
Why the Dorsogluteal Site Persists
Given the evidence favoring the ventrogluteal site, you would expect the dorsogluteal to have disappeared from practice. It has not. A survey of hospital nurses in Canada found that seven out of ten still used the dorsogluteal site for intramuscular injections, with only about 14% using the ventrogluteal.4Journal of Advanced Nursing. Staff nurses’ sites of choice for administering intramuscular injections to adult patients in the acute care setting A separate study found that the most common reasons nurses avoided the ventrogluteal site were lack of confidence in locating it and fear of harming the patient, ironically the same concern that should steer them away from the dorsogluteal.5PubMed Central. Creating a change in the use of ventrogluteal site for intramuscular injection
This gap between evidence and practice is one of the more frustrating aspects of intramuscular injection technique. Older training materials heavily featured the dorsogluteal quadrant method because it is simpler to teach and easier to visualize. Changing habits in clinical settings takes targeted education and hands-on practice, and many working nurses received their original training before the ventrogluteal recommendation became widespread.
The Needle and Body Fat Problem
Choosing the right site is only half the challenge. The needle has to be long enough to pass through the subcutaneous fat layer and actually reach muscle. If a steroid meant for muscle tissue gets deposited in fat instead, the consequences range from slower and less predictable drug absorption to local complications like fat atrophy or sterile abscess formation.
A systematic review of gluteal tissue thickness found that at the ventrogluteal site, the average subcutaneous fat layer was roughly 20 mm regardless of which landmark method was used, while muscle thickness averaged 35 to 38 mm.3PubMed Central. Gluteal muscle and subcutaneous tissue thicknesses in adults: a systematic review and meta-analysis That means a standard 1.5-inch (38 mm) needle should reach muscle in many people, but not all. Women tend to carry more subcutaneous fat in the gluteal region than men. A study using computed tomography confirmed that when a standard 25.4 mm needle was used, many women ended up with the injection deposited in fat rather than muscle, because their subcutaneous layer was thicker than the needle could traverse.6Journal of Korean Academy of Nursing. Gluteal Subcutaneous Fat Thickness Measured by Computed Tomography as an Estimate of Proper Gluteal Intramuscular Injections in Korean Adults
A separate analysis established practical BMI cutoffs for the ventrogluteal site using a standard 1.5-inch needle: the expected failure rate climbed to about 71% in women with a BMI over 30, and about 60% in men with a BMI over 35.7American Journal of Therapeutics. Body Mass Index: A Reliable Predictor of Subcutaneous Fat Thickness and Needle Length for Ventral Gluteal Intramuscular Injections At the dorsogluteal site, the problem is even worse. A systematic review concluded that a significant number of dorsogluteal injections end up in subcutaneous tissue in anyone with a BMI above 25, and especially in women.8PubMed. Dorsogluteal intramuscular injection depth needed to reach muscle tissue according to body mass index and gender: A systematic review
The practical takeaway: if you or the person you are injecting has a higher body weight, a longer needle (2 inches, or 50 mm) is often necessary for gluteal injections. Sticking with the “standard” length because it is more commonly stocked risks depositing the steroid into fat, which defeats the purpose of intramuscular delivery.
How Injection Depth Affects Steroid Absorption
This is not just an academic distinction. Where the medication actually lands in the tissue changes how fast and how completely it enters the bloodstream. Muscle tissue has a rich blood supply that promotes relatively quick absorption, typically over minutes to hours for water-based solutions and over weeks for oil-based depot formulations. Fat tissue, by contrast, has poor blood flow and acts as a slow-release reservoir in an uncontrolled way.
Research on intramuscular drug absorption has shown that shallow injections into the subcutaneous fat layer produce considerably longer absorption times, particularly for lipophilic (fat-soluble) drugs, which many steroid esters are.9International Journal of Pharmaceutics. Release and absorption rate aspects of intramuscularly injected pharmaceuticals For someone receiving a depot steroid injection meant to provide steady drug levels over weeks, an accidental subcutaneous deposit can mean erratic blood levels, a delayed peak, or an inadequate therapeutic effect.
A broader narrative review estimated that only 32 to 52% of intended intramuscular gluteal injections actually reach muscle, with the rest landing in subcutaneous fat. Those rates drop further in people who are obese or taking medications like antipsychotics that promote weight gain.10SpringerLink. A narrative review of the success of intramuscular gluteal injections and its impact in psychiatry That means roughly half of all gluteal intramuscular injections may be functionally subcutaneous injections, which is a staggering failure rate for something so routine.
Injection Technique and Pain Reduction
Beyond site selection and needle length, technique matters. The Z-track method involves pulling the skin and subcutaneous tissue to one side before inserting the needle, injecting the medication, pausing briefly, and then releasing the skin so the tissue layers slide back into their natural position. This creates a zigzag path that helps seal the medication in the muscle and reduces leakage back through the needle track.
Evidence on Z-track technique shows it reduces drug leakage compared with standard injection, though its effect on pain is less clear. A study of intramuscular diclofenac injections found Z-track cut leakage but did not significantly reduce pain severity.11PubMed. The Effect of the Z-Track Technique on Pain and Drug Leakage in Intramuscular Injections A systematic review and meta-analysis reached a similar conclusion: Z-track appears to help with leakage but does not reliably decrease the sting of the injection itself.12PLoS ONE. The effect of intramuscular injection technique on injection associated pain; a systematic review and meta-analysis
For steroid injections specifically, leakage reduction is arguably more important than pain reduction. If an oil-based steroid leaks back along the needle track into subcutaneous tissue, it can cause local irritation, fat atrophy, or skin discoloration at the injection site. Z-track helps keep the medication where it belongs.
One technique question that generates debate is aspiration, the practice of pulling back the plunger briefly before injecting to check for blood return. A systematic literature review concluded that aspiration is unnecessary at the ventrogluteal, deltoid, and vastus lateralis sites because no major blood vessels run through them. However, aspiration is still recommended when using the dorsogluteal site because of its proximity to the gluteal artery.13PubMed. Aspirating during the intramuscular injection procedure: a systematic literature review This is yet another reason the ventrogluteal site is simpler and safer: you can skip the aspiration step entirely.
Comparing the Ventrogluteal Site to Other Pain Outcomes
Patients care about whether the shot hurts. A study that directly compared injections at the dorsogluteal and ventrogluteal sites in the same patients found that pain scores averaged about 2.2 out of 10 at the ventrogluteal site versus about 3.7 at the dorsogluteal. Bleeding and bruising were also lower at the ventrogluteal site, and hematoma formation at 48 and 72 hours was substantially reduced.14Gümüşhane Üniversitesi Sağlık Bilimleri Dergisi. Ventrogluteal ve Dorsogluteal Bölgeye Uygulanan İntramüsküler Enjeksiyonların Kanama, Ağrı ve Hematom Açısından Karşılaştırılması The pain difference may seem modest on a numeric scale, but in practice, patients receiving regular steroid injections notice the cumulative effect. Less pain per shot means better adherence to an injection schedule, which matters for conditions requiring ongoing depot steroids.
Interestingly, a study on testosterone ester injections found that while the gluteal site overall produced fewer total side effects and less bleeding than the deltoid or thigh, it was reported as more painful than those sites.15Human Reproduction. Tolerability of intramuscular injections of testosterone ester in oil vehicle That finding likely reflects the dorsogluteal site specifically, since the study predates the widespread adoption of ventrogluteal technique. It also underscores that “the buttock” is not a single uniform target. Where on the buttock you inject changes the experience.
Gluteal Injections and Drug Bioavailability
For certain steroid formulations, the gluteal muscle is not just acceptable but actually preferable to other sites. A pharmacokinetic study of nandrolone esters in oil found that a 1 mL injection into the gluteal muscle produced the highest bioavailability and the most sustained physiological effect compared with the same dose injected into the deltoid or in larger volumes. The gluteal injection led to the highest peak drug levels and the most sustained suppression of endogenous testosterone, suggesting that the gluteal muscle’s size and blood flow support more complete and sustained absorption of oil-based steroid depots.16The Journal of Pharmacology and Experimental Therapeutics. Pharmacokinetics and Pharmacodynamics of Nandrolone Esters in Oil Vehicle: Effects of Ester, Injection Site and Injection Volume
This has real clinical relevance. Many steroid injections used for hormone replacement therapy, contraception, or long-acting psychiatric medications come in oil vehicles specifically designed for slow intramuscular release. Using a smaller muscle like the deltoid for a viscous 1 mL oil injection can be more painful and may alter the drug’s release profile. The gluteal muscle can comfortably accommodate larger volumes and thicker formulations.
Complications Specific to Steroid Injections in the Buttock
Steroid injections carry a few risks beyond those common to all intramuscular shots. Subcutaneous fat atrophy is one of the more visible complications: if corticosteroid leaks into the fat layer or is deposited too shallowly, it can cause a visible dent or depression in the skin that may take months to resolve, if it resolves at all. A prospective study of extra-articular corticosteroid injections found fat atrophy in about 7% of cases, with all affected patients being women.17PubMed Central. Cutaneous complications following extra-articular corticosteroid injections – A prospective cohort study While that study focused on wrist injections rather than gluteal ones, the mechanism applies to any site where steroid contacts subcutaneous tissue. Ensuring the injection reaches muscle, not fat, is the primary prevention strategy.
Nicolau syndrome is a rare but dramatic complication that can follow any intramuscular buttock injection, not just steroids. It involves localized tissue death, starting with intense pain at the injection site and progressing to skin discoloration and necrosis. Case reports describe it following injections of anti-inflammatory drugs into the buttock, where inadvertent intra-arterial or peri-arterial injection triggers vascular spasm and tissue ischemia.18PubMed Central. Nicolau syndrome after intramuscular injection – 3 cases The ventrogluteal site reduces this risk by placing the needle away from major blood vessels, but the condition serves as a reminder that any injection carries some inherent risk and should be performed with clean technique and appropriate landmarks.
Activity After a Gluteal Steroid Injection
A question that comes up often, especially for people who exercise regularly or self-administer steroid shots at home, is how soon you can resume normal activity. For corticosteroid injections specifically, the evidence base is thin, but the consensus among sports medicine practitioners leans toward one to two days of relative rest for the injected area. The rationale is that limiting intense activity in the hours after injection may reduce systemic absorption of the steroid and allow the local anti-inflammatory effect to take hold more effectively.19PubMed Central. One to Two Days of Rest Is Recommended Before Returning to Sport After Intra-Articular Corticosteroid Injection in the High-Level Athlete
For intramuscular depot steroids like testosterone or nandrolone, the rest period is less formally studied, but common sense applies. Heavy exercise that engages the gluteal muscles shortly after injection can increase blood flow to the area and potentially speed absorption, altering the intended slow-release profile. It can also worsen post-injection soreness. Most experienced self-injectors report that training legs or glutes on injection day makes the soreness notably worse. Waiting 24 to 48 hours before loading the injected muscle is a reasonable approach.
When the Ventrogluteal Site Is Not an Option
There are circumstances where the ventrogluteal site might not be practical. People with significant hip joint pathology, hip replacements, or scarring from prior surgeries in the area may need an alternative. In infants and very young children, the anterolateral thigh is generally preferred over any gluteal site because the gluteal muscles are not yet well developed. Research has explored the ventrogluteal site in children as young as two months and found it anatomically feasible, but the thigh remains the standard recommendation for pediatric vaccinations.20Vaccine. Ventrogluteal area – a suitable site for intramuscular vaccination of infants and toddlers
For adults who cannot use the ventrogluteal site, the vastus lateralis (outer thigh) and the deltoid (upper arm) are alternatives, though both have limitations for steroid injections. The deltoid can only accommodate small volumes comfortably, usually 1 mL or less, which rules it out for many depot steroid formulations. The vastus lateralis can handle larger volumes but tends to be more painful for oil-based injections. When forced to use the dorsogluteal site, aspirating before injection becomes important, and extra care with landmark identification can reduce the chance of sciatic nerve contact.