How Plastic Surgeons Choose Implants — and What KOL Relationships Actually Are

By Dr. Kelly Killeen, MD FACS · Board-Certified Plastic Surgeon · Published July 30, 2025

All U.S. implant companies make great products. Surgeons stick with one or two brands because of volume pricing, consignment agreements at surgery centers, and catalog mastery — not because we're paid to push them. The real money relationships are through KOL and consulting work, which should always be transparent.

How Plastic Surgeons Choose Implants — and What KOL Relationships Actually Are

A few people in the comments have been asking some version of: "How do plastic surgeons choose which implants to use? Are you being paid by companies to recommend them?"

These are fair, important questions that every patient should feel comfortable asking. Let me answer them honestly — both how implant selection actually works, and the real ways physicians do (and don't) earn money from implant and device companies.

First: All U.S. Implant Companies Make Great Products

I want to start with this because it matters:

All of the implant companies in the United States make great products.

Mentor, Motiva, Allergan, Sientra — they're all good. There is no "bad implant brand" in the U.S. market.

So when a new implant brand comes out and you see online buzz that "I have to switch to Motiva" or similar — slow down. If you have an excellent result with the implants you have, there's no reason to change. New does not automatically equal better when the existing options are all already excellent.

Why Most Surgeons Use One or Two Brands

Most plastic surgeons primarily use one or two implant brands — not all of them. Patients sometimes assume this means we're being paid to push a specific brand. That's not why.

Reason 1: Volume Pricing

Implant pricing goes down the more we purchase from a single company. Sticking with one or two brands means:

  • Lower per-implant cost
  • Lower overall surgical cost for the patient
  • More predictable supply chain

Reason 2: Consignment at Surgery Centers and Hospitals

Most surgery centers and hospitals have consignment agreements with specific implant brands:

  • The facility has a contract with the brand
  • The implants are already physically present at the facility, ready to use
  • Every size in the catalog is available immediately
  • This keeps costs low and inventory management simple

For example: when I operate at Cedars-Sinai, they have an Allergan consignment. That's what I use there — and frankly, that's all I'm allowed to use at that facility. My private surgery center has Motiva and Allergan on consignment, so I have access to both brands when I'm operating there.

Reason 3: Mastery of a Catalog

Every implant catalog has its own dimensions, projection options, and shape characteristics. Knowing one or two catalogs inside and backwards lets a surgeon pick the right implant for a given patient quickly and accurately.

  • I know the Allergan catalog inside out
  • I'm getting deeply familiar with the Motiva catalog
  • Other surgeons feel the same way about Sientra or Mentor

You're not a good surgeon because you use one brand and you're not a bad surgeon because you use another. All four brands have strong product lines. Pick the one your surgeon knows best.

Do I Use the Other Brands Too?

Yes, occasionally. We all use all of the brands sometimes — usually because of warranty cases.

If a patient comes to me with a problem involving a Sientra or Mentor implant that's under warranty, I use that brand for the replacement so the warranty applies. The companies are good about supporting warranty claims regardless of which surgeon does the case.

So Am I Being Paid by Companies to Use Their Implants?

No. Implant makers do not pay surgeons to use their implants. They do not pay us to make social media posts using their products.

That's a pretty firm boundary in our specialty. The way device companies engage with physicians financially is through a totally different mechanism — and I want to be transparent about it, because it's relevant.

How Physicians Actually Earn Money From Device Companies

If you follow my account, you may already know I'm a KOL — a Key Opinion Leader — for several implant and device companies. Here's what that actually means.

What a KOL Does

A Key Opinion Leader:

  • Consults with device companies on product development
  • Gives honest feedback on prototypes and current products
  • Helps research and development teams understand surgeon and patient needs
  • Participates in clinical trials of new technology
  • Sometimes serves on medical advisory committees

It's essentially a side job for physicians who have a particular expertise in a given area. I'm a KOL for multiple companies in implants, scaffolding, and other device categories.

Why I Love It

  • I get to see what's coming next in plastic surgery
  • I get to shape products so they actually work for patients
  • I get opinionated input into how care will look in 5–10 years
  • I get to participate in clinical trials (like the STANCE trial I'm a PI on for capsular contracture treatment)

It's genuinely fun, and I think it's a meaningful part of how I contribute to advancing the field.

Why This Doesn't Mean I Push Specific Brands at Patients

There's an important distinction between:

  • Consulting with companies on product development
  • Being paid to push a specific product to my patients

The first is normal and disclosed. The second would be unethical, and I don't do it. My implant selection for any individual patient is based on what's best for that patient's anatomy and goals — not on which company I'm consulting for.

A Note: Cosmetic Surgeons vs. Plastic Surgeons

One subtle but worth-mentioning point: KOL roles in plastic surgery are filled by plastic surgeons — not "cosmetic surgeons" who haven't completed plastic surgery training. Device companies want input from physicians with the deepest training and the most extensive case experience. If a "cosmetic surgeon" is claiming to be a KOL for a major implant company, that's worth raising an eyebrow at.

Why You Should Always Feel Comfortable Asking

Here's the broader point I want every patient to take from this:

It is never wrong to ask your doctor — any doctor — whether their recommendation is influenced by a financial relationship with a company.

This applies to:

  • Plastic surgeons recommending implants, scaffolding, or skincare
  • Primary care doctors recommending medications
  • Dermatologists recommending products
  • Any clinician prescribing something specific

The research on this is sobering. There are studies showing that something as small as giving a pen can shift prescribing habits. That's real, and physicians need to be aware of it.

In my practice, I have medical reps in my office every day. They do an important job — bringing me information about new products, new protocols, new technologies. I want that information. But I have to consciously make sure that those relationships don't influence my recommendations beyond what the evidence supports.

What I Tell Patients at Consultation

When I recommend a specific implant for a patient, I explain exactly why that implant is right for them:

  • Their anatomy
  • Their goals
  • The available shapes and profiles
  • Why this particular implant achieves what they want better than alternatives

If your surgeon can't give you a similarly specific reason for the implant they're recommending, that's worth pressing on. You should be able to ask:

  1. "Why this implant for me specifically?"
  2. "Are there other brands you considered?"
  3. "Are you in a financial relationship with this company?"
  4. "What would change about your recommendation if I were a different patient?"

These are completely appropriate questions. A good surgeon will welcome them and answer honestly.

My Other Consulting Work

For full disclosure, since transparency matters in this conversation:

  • I'm on the medical advisory committee for Tower 28
  • I do consulting for various skincare companies
  • I'm a KOL for multiple implant and device companies
  • I'm the PI on an FDA trial for a scaffolding product

Consulting is genuinely one of my favorite things I do. I get to see new technology, give opinionated feedback, and then walk away — and the companies use that input to make better products.

The Bottom Line

Plastic surgeons choose implants based on volume pricing, hospital and surgery center consignments, catalog familiarity, and warranty considerations — not because we're paid to push specific brands.

The real financial relationships physicians have with device companies are through consulting, KOL roles, advisory committees, and clinical trial work — and those should be transparent and disclosed when they're relevant to the conversation.

As a patient, you should always feel free to ask your doctor:

  • Why they're recommending a specific product
  • Whether they have a financial relationship with the manufacturer
  • What other options they considered

These are good questions. A good clinician answers them honestly.

And just to address the comment that started this whole video: yes, I notice there's no specific factual response to anything I said — just a low-effort "big pharma" jab. That's not an argument. But I'm happy to engage with the actual question underneath it, which is a legitimate one.

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