Who’s Affected?

Did you or a loved one have knee replacement revision surgery due to bone cement complications?

Or has your doctor recommended that you should undergo revision surgery for a failed knee implant within three years of the initial surgery?

Knee replacement patients have undergone revision surgery after their implants failed due to a failure of the bone cement that is used to attach the knee implant to the bone.

If a knee implant is failing because the bone cement has failed to remain attached to the bone, symptoms of such failure include:

  • Persistent pain
  • New chronic pain
  • Instability
  • Loosening of the knee implant (aseptic loosening)
  • Swelling
  • Decreased range of motion

Some patients may also suffer from bone cement implantation syndrome, which is a reaction to the toxins in the bone cement products. Symptoms of bone cement implantation syndrome include:

  • Oxygen deficiency
  • Low blood pressure
  • Unexpected loss of consciousness
  • Blood clots
  • Cardiac arrest
  • Death

If you or a loved one underwent knee replacement revision surgery or needs revision surgery within three years of the first total knee replacement surgery, you may qualify to file a bone cement lawsuit. 

Some of the bone cement products at issue include:

  • Cobalt HV Bone Cement (Biomet/DJO Surgical)
  • DePuy CMW 1 Bone Cement
  • Simplex HV Bone Cement (Stryker/Howmedica)
  • SmartSet HV Bone Cement (DePuy)

See if you qualify by filling out the short form on this page. 

Overview: Knee Replacement Cement Failure

There are two types of knee replacement products: cemented and cementless. Cemented joint prosthetics use a bone cement that is supposed to help attach the implant to the natural bone of the patient.

There are three types of cement used for total knee replacements: low, medium, and high-viscosity cement (HVC). High-viscosity cement is sometimes preferred by surgeons because it is easier to work with—it takes less time to mix together as well as less time to set, but some researchers claim that it is also more prone to failure because it doesn’t bond as well to the bone.

Bone cement complications and knee replacement cement failure can happen for two main reasons: aseptic loosening and bone cement implantation syndrome.

Aseptic Loosening

Aseptic loosening is a loosening of the implant without any accompanying infection. This can happen because the bone cement may fragment or the bond with the bone is simply broken. Aseptic loosening typically occurs where the implant is attached to the tibia bone more than the femur.

A 2016 knee replacement report published by the National Center for Biotechnology Information (BNBI) looked at 13 cases in which the knee implant failed to stay attached to the cement or the implant was debonded from the bone along the front side of the tibia. The researchers linked the failure to the use of high-viscosity cement. By comparison, implants that used low or medium viscosity cement did not display signs of debonding.

Bone Cement Implantation Syndrome

Bone cement implantation syndrome is a potentially life-threatening bone cement side effect.

Symptoms of bone cement implantation syndrome include:

  • Hypoxia (lack of oxygen)
  • Hypotension (low blood pressure)
  • Increased pulmonary vascular resistance
  • Cardiac arrhythmias
  • Cardiac arrest
  • Blood clots
  • Fat/marrow emboli (fat or marrow globules that are leased into the bloodstream)
  • Others

These bone cement complications may occur when the cement is applie. The pressure may cause bone marrow, fat, and/or fragmented bone cement to make its way into the bloodstream.

There is also concern that when the bone cement is applied with a needle that some of the bone cement may make its way into other tissues surrounding the area, including veins and nerves, which may lead to nerve pain and other possible side effects.

Bone Cement & Revision Knee Replacement Lawsuits

Bone cement lawsuits have been filed by patients who have undergone knee replacement revision surgery due to complications caused by the bone cement that was used in their first total knee replacement procedures.

A recent bone cement lawsuit that was filed in June 2018 against DePuy, a Johnson & Johnson subsidiary, alleged that its SmartSet HV Bone Cement caused the patient’s knee implant to loosen. The bone cement failure resulted in the patient needing revision knee replacement surgery about a year after the initial surgery.

The lawsuit claims that the SmartSet HV Bone Cement was defective. The DePuy bone cement had been approved through the Food and Drug Administration’s fast-track approval process that can be used by companies when they make products that are similar to others that are already on the market.

DePuy told the FDA that SmartSet HV was similar to DePuy CMW 1 Gentamicin bone cement and Simplex P made by Stryker, the lawsuit explains.

The bone cement lawsuit claims that SmartSet HV is “less effective, and more prone to failure, than the previously-approved bone cements.”

A knee replacement revision surgery lawsuit that was filed in 2013 said that the DePuy CMW 1 Gentamicin bone cement that was used to attach a woman’s knee implant caused the implant that was part of the tibial component to loosen, requiring revision surgery about two and a half years after the initial surgery.

If you or a loved one underwent revision knee replacement surgery or your doctor is recommending revision surgery three years or less after the initial implant and a bone cement was used, you may qualify to file a knee replacement revision surgery lawsuit. 

See if you qualify by filling out the free form on this page. 

Get Help – It’s Free

Join a Free Knee Replacement Cement Failure Lawsuit Investigation

If you qualify, an attorney will contact you to discuss the details of your potential case at no charge to you.

PLEASE NOTE: If you want to participate in this investigation, it is imperative that you reply to the law firm if they call or email you. Failing to do so may result in you not getting signed up as a client or getting you dropped as a client.

E-mail any problems with this form to:

  • We tell you about cash you can claim every week! Subscribe to our free newsletter today.

After you fill out the form, the attorneys who work with Top Class Actions will contact you if you qualify to let you know if an individual lawsuit or class action lawsuit is best for you.


The choice of a lawyer is an important decision and should not be based solely on advertisements.

Counsel responsible for this advertisement includes Anthony Johnson at:

Johnson Firm

PAID ATTORNEY ADVERTISEMENT: THIS WEB PAGE IS AN ADVERTISEMENT AND THE PARTICIPATING ATTORNEY(S) ARE INCLUDED BECAUSE THEY PAY AN ADVERTISING FEE. Top Class Actions is not a law firm, lawyer referral service, or prepaid legal services plan. We do not endorse or recommend any third-party claims processing company, lawyer, or law firm who participates in the network. We do not make any representation, and have not made any judgment, as to the qualifications, expertise, or credentials of any participating lawyer or processing group. No representation is made that the quality of the legal services or claims processing to be performed is greater than the quality of legal services or claims processing performed by other lawyers or claims processing group. The information contained herein is not legal advice. Any information you submit to Top Class Actions does not create an attorney-client relationship and might not be protected by attorney-client privilege. Instead, your information will be forwarded to an attorney or claims processing firm for the purpose of a confidential review and potential representation. You should not use this website to submit time-sensitive, or privileged information. All photos contained on this website are of models and do not depict clients.