When surgeons begin evaluating MiMedx surgical biologics, two names frequently encountered are AMNIOFIX® and AMNIOEFFECT®.
Both are human placental tissue allografts used in surgical settings, both are processed using MiMedx’s proprietary PURION® technology, and both are designed to provide a protective barrier on surgical wounds.
But AMNIOFIX and AMNIOEFFECT are not the same graft.
The products differ in their tissue composition, thickness, configurations, handling characteristics, and the types of surgical environments in which their physical characteristics may be useful.
Understanding those differences can help surgeons and healthcare organizations better evaluate which placental tissue allograft may be appropriate for a particular surgical application.
What Is MiMedx AMNIOFIX?
AMNIOFIX is a placental tissue allograft composed of dehydrated human amnion/chorion membrane, commonly abbreviated DHACM.
The product combines two placental membrane layers:
- Amnion
- Chorion
MiMedx offers AMNIOFIX in sheet and fenestrated configurations and in multiple sizes.
The manufacturer describes AMNIOFIX as providing a protective barrier on surgical wounds.
Its relatively thin membrane profile allows it to be positioned over or around exposed tissues depending on the surgical application and current product Instructions for Use.
AMNIOFIX has become one of the better-known products within the broader category of amniotic grafts and placental tissue allografts.
What Is MiMedx AMNIOEFFECT?
AMNIOEFFECT is also a human placental tissue allograft, but its construction differs from AMNIOFIX.
AMNIOEFFECT contains three tissue components:
- Amnion
- Intermediate layer
- Chorion
MiMedx describes the product as a thicker placental allograft that provides a protective barrier on surgical wounds and exposed tissues.
The intermediate layer contributes to the graft’s additional thickness, which creates different handling characteristics than a thinner amnion/chorion membrane product.
According to MiMedx, the thickness of AMNIOEFFECT allows it to be secured with sutures when needed and may make it suitable for placement in deeper surgical wounds, subject to the product’s labeling and Instructions for Use.
AMNIOFIX vs. AMNIOEFFECT: What’s the Main Difference?
The simplest distinction is their tissue configuration and thickness.
AMNIOFIX:
Dehydrated human amnion + chorion membrane.
AMNIOEFFECT:
Amnion + intermediate layer + chorion in a thicker tri-layer configuration.
Both come from human placental tissue, but their physical construction creates different product profiles.
That is an important distinction because surgeons do not evaluate biologic grafts solely on the source of the tissue. They also consider how a graft behaves within the surgical environmen
Educational comparison of MiMedx AMNIOFIX and AMNIOEFFECT placental tissue allografts. Product information should always be verified against current MiMedx materials and Instructions for Use.
AMNIOFIX vs. AMNIOEFFECT at a Glance
Tissue Composition
AMNIOFIX:
Dehydrated human amnion/chorion membrane (DHACM).
AMNIOEFFECT:
Human amnion, intermediate layer, and chorion.
Physical Profile
AMNIOFIX:
A thinner placental membrane sheet.
AMNIOEFFECT:
A thicker tri-layer placental tissue allograft.
Configurations
AMNIOFIX:
Available in sheet and fenestrated configurations and in multiple sizes.
AMNIOEFFECT:
Available in sheet configurations across a wide range of sizes.
Surgical Barrier Role
AMNIOFIX:
MiMedx describes AMNIOFIX as providing a protective barrier on surgical wounds.
AMNIOEFFECT:
MiMedx describes AMNIOEFFECT as providing a protective barrier on surgical wounds and exposed tissues.
Handling
AMNIOFIX:
Its thinner membrane profile provides a flexible, lower-profile graft configuration.
AMNIOEFFECT:
Its additional thickness provides different handling characteristics and allows the allograft to be sutured in place when needed.
How Are AMNIOFIX and AMNIOEFFECT Processed?
Both products use MiMedx’s PURION process, a proprietary processing technology developed for placental tissue allografts.
According to MiMedx, PURION includes cleansing and processing intended to preserve components of the native extracellular matrix.
MiMedx also reports that AMNIOFIX and AMNIOEFFECT undergo terminal sterilization for an additional level of safety.
This processing step is worth understanding because not all amniotic grafts or placental tissue allografts are processed in the same way.
Two grafts may both originate from placental tissue while differing substantially in:
- Tissue layers
- Processing
- Preservation
- Thickness
- Sterilization
- Storage
- Handling
- Available configurations
This is why evaluating specific products is generally more useful than evaluating the broad term “amniotic graft” alone.
Where Is AMNIOFIX Used in Surgery?
MiMedx provides educational examples of AMNIOFIX being used as an onlay allograft to cover and protect exposed tissue in a range of surgical settings.
Manufacturer-listed examples include:
- Myomectomy
- Tendon and ligament repair
- Rotator cuff repair
- Total knee and shoulder arthroplasty
- Posterior lumbar interbody fusion
- Bunionectomy
- Dehiscence repair
- Thyroidectomy
- Limb salvage
- Amputation
- Other surgical wounds
MiMedx also provides specialty-specific educational materials involving AMNIOFIX in areas such as gynecologic surgery, colorectal and general surgery, orthopedic surgery, spine and neurosurgery, plastic surgery, foot and ankle surgery, and vascular surgery.
These examples demonstrate the breadth of surgical settings in which placental tissue allografts are being evaluated and utilized.
They should not be interpreted as establishing identical clinical benefits for every procedure or patient.
Where Is AMNIOEFFECT Used in Surgery?
MiMedx likewise provides examples of AMNIOEFFECT being used as an onlay allograft to cover and protect exposed tissue.
Manufacturer-listed examples include:
- Hysterectomy
- Endometriosis surgery
- Laminectomy
- Tendon and ligament repair
- Complex incision management
- Dehiscence repair
- Flaps
- Exposed bone or hardware
- Minimally invasive surgery
- Amputations
- Other complex surgical wounds
One distinguishing characteristic is the greater thickness of AMNIOEFFECT.
MiMedx specifically notes that this thickness allows the graft to be sutured when needed and supports placement in deeper surgical wounds.
Is AMNIOEFFECT Better Than AMNIOFIX?
That is probably the wrong way to frame the comparison.
The products have different physical characteristics, and those characteristics may make one configuration more suitable than another depending on the surgical situation.
A surgeon might evaluate factors such as:
- The anatomy being covered
- Size of the surgical area
- Desired graft thickness
- Handling requirements
- Whether fixation may be desirable
- Depth and geometry of the surgical site
- Available graft dimensions
- Product-specific clinical evidence
- Current product labeling and Instructions for Use
The goal is therefore not necessarily to determine which product is universally “better.”
The more useful question is:
Which product configuration best fits the clinical and surgical requirements being evaluated?
Are AMNIOFIX and AMNIOEFFECT Amniotic Grafts?
Yes, although placental tissue allografts is often the more precise broader description.
AMNIOFIX contains amnion and chorion.
AMNIOEFFECT contains amnion, intermediate layer, and chorion.
Both therefore incorporate human amniotic membrane tissue and belong within the larger landscape commonly referred to as amniotic grafts, placental tissue allografts, and surgical biologics.
How Do These Products Fit Into Surgical Biologics?
The comparison between AMNIOFIX and AMNIOEFFECT illustrates an important principle within surgical biologics:
Products derived from a similar biological source can still be engineered and processed into very different surgical technologies.
Placental tissue is one platform within the broader surgical biologics field.
Other categories can include extracellular matrix technologies, collagen-based materials, bone graft materials, biologically derived barriers, and other tissue-based technologies used in surgical care.
MiMedx has developed a portfolio of placental tissue allografts specifically for surgical applications, with AMNIOFIX and AMNIOEFFECT representing two different configurations within that portfolio.
Frequently Asked Questions
What is the difference between AMNIOFIX and AMNIOEFFECT?
AMNIOFIX is a dehydrated human amnion/chorion membrane allograft. AMNIOEFFECT contains amnion, an intermediate layer, and chorion, creating a thicker tri-layer graft configuration.
Who manufactures AMNIOFIX and AMNIOEFFECT?
Both products are manufactured by MiMedx Group, Inc., a company specializing in placental tissue technologies and biologic products.
Is AMNIOFIX an amniotic graft?
Yes. AMNIOFIX contains human amnion and chorion membrane tissue and is commonly discussed within the amniotic graft and placental tissue allograft categories.
Is AMNIOEFFECT thicker than AMNIOFIX?
Yes. MiMedx describes AMNIOEFFECT as a thicker allograft containing amnion, intermediate layer, and chorion. The company states that its thickness allows it to be secured with sutures when needed.
Are AMNIOFIX and AMNIOEFFECT surgical biologics?
Both are human placental tissue allografts used in surgical environments and are part of the broader category commonly described as surgical biologics.
About 6|Sixty Biologics
6|Sixty Biologics is a surgical biologics specialist and independent distributor of MiMedx products, focused on supporting surgeons and healthcare organizations across a growing range of surgical specialties.
6|Sixty provides clinical education and access to advanced surgical biologics, amniotic grafts, and placental tissue allograft technologies, including MiMedx products such as AMNIOFIX and AMNIOEFFECT.
Our focus is helping surgical teams better understand emerging biologic technologies and the product characteristics that may matter within the surgical environment.
To learn more about surgical biologics and 6|Sixty, explore our growing Clinical Insights library at 6sixty.com.
References and Additional Information
MiMedx — AMNIOFIX Product Information
Official MiMedx product information describing AMNIOFIX composition, processing, configurations, and surgical-use examples.
MiMedx — AMNIOEFFECT Product Information
Official MiMedx product information describing AMNIOEFFECT composition, thickness, processing, configurations, and surgical-use examples.
MiMedx — Surgical Applications
MiMedx provides specialty-specific educational information for gynecologic surgery, colorectal and general surgery, orthopedic surgery, spine and neurosurgery, plastic surgery, vascular surgery, and additional surgical specialties.
Important Product Information
This article is provided for educational purposes and does not constitute medical advice. Product selection and use are clinical decisions that should be made by qualified healthcare professionals based on current product labeling, Instructions for Use, institutional requirements, individual patient circumstances, and available clinical evidence.
6|Sixty Biologics is an independent surgical biologics distributor and is not MiMedx. AMNIOFIX®, AMNIOEFFECT®, PURION®, and MiMedx are trademarks or trade names of MiMedx Group, Inc.
