Real projection in buttock surgery: why implant size does matter
Main point: Many patients confuse projection with the optical effect created by slimming the waist, flanks, and lower back.
That effect exists and can be very powerful, but it has its limits. When the goal is a real and measurable change in profile, sometimes it's necessary Meeting structurenot just the outline.
Related Reading: BBL without implants: when prostheses are not advisable · Buttock augmentation (BBL) · Supercharged BBL (hybrid technology) · 360° Liposuction
The patient's goal: she didn't want illusion, she wanted real projection
The patient started with a favorable anatomy. The lower back already showed an S-curve, indicating that the secondary projectionThat is, the projection created by the contour was already partially present.
However, her request was very specific: she wanted a clear posterior projection of the gluteus maximus, visible and measurable in profile, not just an optical effect due to waist reduction.
That difference is usually what determines whether liposuction and fat transfer are enough, or whether it makes sense to add structural reinforcement with implants.
Secondary projection versus real projection
- Secondary projection: It is created by subtraction. By slimming the lower back, flanks, and waist, the buttocks appear more prominent by contrast.
- Actual projection: It's structural. This means that the gluteal mass actually shifts backward, objectively changing the body profile.
Clinical rule: If the lumbar curve is already good, further fat removal usually results in diminishing returns. From that point on, the improvement the patient seeks typically requires structural enhancement, i.e., implants, followed by refinement with fat grafting.
Why liposuction and fat weren't enough in this case
In this patient, a more aggressive liposuction would not result in a significant subsequent change because the lumbar contour was already well resolved.
Furthermore, fat grafting alone does not always achieve a strong and stable projection when the base volume is limited or when the aesthetic goal is high.
When the patient looks real projection And since anatomy has already given almost everything possible through secondary projection, the logical option is structural reinforcement.
Strategy: hybrid augmentation to gain projection without straining the body
The chosen plan was a hybrid approach: implant plus controlled fat redistribution.
The gluteal musculature was ample and well-developed, which allowed for a stable and safe implant plan.
A 370 cc B-convex implantAnd this point is essential: the size was chosen because biomechanical tolerancenot out of boundless aesthetic ambition.
Why implant size is a tactical decision and not just an aesthetic one
From the patient's point of view, larger size may seem synonymous with a better result.
From a surgical point of view, the size of the implant is a critical safety variable.
- Implant within the anatomical range: tolerable pressure, more predictable healing, and better long-term stability.
- Oversized implant: More tension on the tissues, greater risk of seroma, displacement, wound problems, and a more difficult recovery.
Important idea: The risk does not increase linearly. Beyond a certain threshold, tissue tolerance breaks down and complications can increase disproportionately.
Result: realistic projection without scaling the risk
With 370 cc, the patient achieved a clearly visible and measurable posterior projection, something that would not have been achieved just by slimming the waist.
At the same time, the size respected muscle capacity and favored a more stable evolution, with smooth transitions and a harmonious proportion.
Are you looking for real projection or just waist definition?
During your consultation, we determine whether your case would benefit more from secondary projection, achieved with liposuction and fat transfer, or from true projection, achieved with implants and fat refining. The right decision is based on your anatomy, not on trends.
FAQ
What is secondary projection and why can it be deceiving?
It is the visual effect created by slimming the waist, flanks, and lower back.
It can make the buttocks appear more prominent, but it doesn't always increase the actual projection of the buttocks themselves in profile.
When does it make sense to consider buttock implants?
When the goal is a real posterior projection and the anatomy already offers a good lumbar curve or is already optimized with contour.
Also when the available fat does not allow the desired impact to be achieved with grafting alone.
Why doesn't a larger implant always give a better result?
Because size increases pressure and tension on tissues.
The extra benefit in projection may be small compared to the increased risk if anatomical tolerance is exceeded.
What does the hybrid approach with implants and fat offer?
The implant provides structure and stable projection.
Fat provides shape, roundness, smooth transitions, and a more natural finish around the implant.
Do you want a personalized assessment?
Every patient is different. At Cirumed Clinic Marbella, Dr. Aslani's team will study your case individually to explain which options are safe, realistic, and suitable for your anatomy.
You can send us your goals and some photos via video consultation. We'll guide you through the procedure, recovery, and the most suitable plan for you.





