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Custom Knee Replacement


Knee replacement is a very common procedure. Despite its proven history, studies show that as many as 1 in 5 patients report they are not satisfied with the results of their total knee replacement.

To provide our patients with better results, Conformis has developed the only customized total knee replacement that is designed specifically for your knee.

The Conformis Brochure provides detailed information about customized knee implants. 

Understanding Your Knee

Your knee joint is formed by the intersection of the femur (thigh bone), the tibia (shin bone) and patella (knee cap).

These bones form three “compartments” or sections.

Medial compartment

(inner half of your knee)

Lateral compartment

(outer half of your knee)

Patellofemoral compartment

(behind the knee cap)


Osteoarthritis (OA) is a degenerative joint disease characterized by the breakdown and wearing away of cartilage causing the bones to rub together and result in pain. It can affect all of the knee or just parts, depending on the severity.

partial knee replacement (PKR) is an option for people who have OA in one or two compartments.

A total knee replacement (TKR) is an option for people with OA in all three compartments.


There Has to be a Better Way

Knees vary in size and shape. Even your own two knees are different. In a traditional knee replacement, however, the surgeon selects an “off-the-shelf” implant from 6-10 standard sizes and makes the necessary adjustments to fit the implant during the procedure.

Because off-the-shelf implants aren’t designed to your specific anatomy, surgeons often have to compromise on implant fit, rotation, and alignment. These compromises can cause pain or discomfort after surgery and help explain why 1 in 5 patients aren’t satisfied.

The first knee replacement that fits only one knee. Yours.

To provide our patients with better results, Conformis has developed the only customized total knee replacement that is designed specifically for your knee.


This patient-specific approach offers unique advantages not possible with traditional, off-the-shelf implants:

  • Individualized fit that virtually eliminates sizing compromises common with off-the shelf implants and often associated with pain after surgery.
  • Designed to follow the shape and contour of each patient’s knee, which provides an increased potential for a more natural feeling knee.
  • Maintains the patient’s natural joint lines to avoid instability, a common cause of patient dissatisfaction


Better fit leads to less pain.

Conformis implants are specifically designed to fit your knee, avoiding sizing and positioning compromises common with off-the-shelf implants that can lead to long-term painful outcomes. Our implants are also designed for optimal bone preservation.

Joint Lines

Stability more closely matched to the normal knee.

Many patients complain that their knee feels wobbly after knee replacement surgery. This feeling is formally known as mid-flexion instability. Off-the-shelf knee implants aren’t designed to match the natural offset joint line that most patients have. Instead, they flatten the offset to the same height, which can lead to mid-flexion instability.

Conformis implants maintain the patient’s medial and lateral joint lines, which allows for a more stable knee after surgery.


Designed for a more natural feeling knee

Conformis implants are designed to mimic the natural shape of your knee, which plays an important role in the way your knee bends and extends. By restoring the natural shape of your knee rather than replacing it with the standardized geometry of off-the-shelf implants, your knee may feel more like your natural knee.


Customized just for you.

Conformis iFit® image-to-implant® technology converts a CT scan of your knee into a 3D model and then designs an implant that’s unique to you. This fully automated process ensures that your implant is made for your knee, and only your knee.



These videos are designed to help educate you on Conformis and our knee replacement options. The iTotal CR Knee Replacement System (KRS) is intended for use as a total knee replacement in patients with knee joint pain and disability whose conditions cannot be solely addressed by the use of a prosthetic device that treats only one or two of the three compartments. The iDuo G2 Knee Repair System (KRS) is intended for use in patients with severe knee joint pain and disability whose conditions cannot be solely addressed by the use of a prosthetic device that treats only a single knee compartment. The iUni G2 Knee Replacement System (KRS) is intended for use in one compartment of the osteoarthritic knee to replace the damaged area of the articular surface in patients with evidence of adequate healthy bone sufficient for support of the implanted components.These implants are intended for cemented use only.


What Are My Options?

Health & Behavior Modification

Weight loss to help decrease stress on the joints – Exercise to help improve mobility.

Physical Therapy

Learning to strengthen and stretch key muscles that support the knees, and other ways to protect and take care of our knees, can ultimately prolong the health of this vital body part.

Knee Injections

Corticosteroid (anti-inflammatory) injections for temporary pain relief. Hyaluronic acid injections (viscosupplementation –“WD 40”) (Approved for 6 Month Relief – Processed from Rooster Combs), Single injection or multiple injection series

Tylenol / NSAIDs

For pain management.


Assistive Devices

Braces, canes and other assistive devices.


The Personalization Process. The best candidate is someone who has: Daily pain that interferes with their normal activities, significant knee stiffness, instability or buckling of the knee, significant deformity caused by osteoarthritis (bowlegs or knock-knees).

Our Locations

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