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DePuy Attune Knee Replacements

DePuy Attune knee replacements promise quicker recovery and more natural movement. But hundreds of patients needed revision surgery after their Attune implants loosened. Some patients have sued DePuy over their faulty Attune knee replacements.

DePuy engineered its Attune knee replacement to be one of the most advanced on the market. But patients have filed hundreds of reports claiming that the devices loosened.

At least one study found an “unusually high” failure rate for Attune knee implants. The problem may stem from cement failing to bond components to the tibia – one of the bones in the lower leg.

The U.S. Food and Drug Administration has received hundreds of complaints about Attune knee problems.

Some patients have filed Attune knee lawsuits over complications they experienced.

What Is the DePuy Attune Knee?

The DePuy Attune knee system is a total knee replacement implant. DePuy also manufactures an Attune model for revision knee replacement surgery. DePuy designed the Attune knee to improve stability and motion.

DePuy Attune Rotating Platform Design
DePuy’s rotating platform design is intended to reduce stress and wear on the implant.

The DePuy Attune knee hit the U.S. market in 2011. In March 2014, DePuy Synthes announced two new technologies for Attune.

One had a rotating platform design. The other had an anatomic patella — to replace the natural kneecap. DePuy claimed that the upgrades would improve range of motion and reduce implant wear.

What Is the DePuy Attune Knee Made of?
  • Attune knee replacements include metal and plastic parts.
  • Metal Attune knee components are made from a Cobalt-Chromium-Molybdenum alloy.
  • Other Attune parts are made from DePuy’s own polyethylene formula.

Knee Replacement Surgery With Attune

Attune knee replacement surgery lasts about two hours. The surgeon removes damaged bone and replaces it with the Attune knee prosthesis. Surgeons use cement to keep the device in place.

In the weeks before surgery, patients may undergo physical therapy. Their doctor may also put them on a weight loss program.

After surgery, surgeons will schedule follow up visits. The doctor will examine the knee replacement to see that it is healing and working as it should. Patients should let their surgeon know if they experience knee replacement complications.

DePuy Attune Knee
DePuy Attune Revision Knee System

DePuy Attune Knee Problems

Loosening is one of the most serious Attune knee problems. A study suggests it may be one of the most common.

DePuy Attune knee problems can include:
  • Loosening
  • Fractures (of the device or surrounding bone)
  • Tibial Loosening
  • Early or excessive wear and tear

A 2017 study looked into DePuy Attune tibial loosening. Researchers found that Attune knees had an “unusually high” early failure rate. They found more than 230 reports to the FDA about Attune tibial loosening.

Tibial loosening happens when the plate attached to one of the lower leg bones comes loose. Tibial loosening can lead to instability or dislocation.

The study suggested that the problem was a failure of the cement to bond the implant to the bone. The study’s authors also suggested it was an underreported problem with Attune knees. They published their work in the Journal of Knee Surgery.

Attune knee components may also fracture. This may also cause loosening, pain or other problems. Loosening can also lead to fractured bones. Loosening may cause components to wear out sooner than expected.

Revision Surgery
All of these conditions require revision surgery to repair or replace the knee implant.

How to Tell if Your Attune Knee Replacement Failed

Patients should remain alert for signs and symptoms of Attune knee replacement problems. Pain and instability are among the clearest early warnings of knee replacement loosening.

Patients who experienced Attune tibial loosening reported these signs and symptoms:
  • Backward or sideways movement in the knee
  • Instability when standing or putting weight on the Attune knee
  • Pain
  • Decreased range of motion
  • Swelling or inflammation
  • Unusual warmth around the knee months after surgery

DePuy Attune Knee Replacement Lawsuits

Attune knee lawyers filed the first DePuy Attune knee replacement lawsuit in September 2017. Several more Attune patients have filed suits since then.

People filing Attune knee replacement lawsuits claim:
  • The Attune knee failed earlier than expected
  • They experienced tibial loosening with an Attune knee
  • Patients needed revision surgery

Attune lawsuits are still in the early stages. There have been no court verdicts or publicized settlements yet. Attune knee lawyers are taking new cases.

Based on the number of reported failures, there could be hundreds of Attune knee replacement lawsuits. If that happens, attorneys may ask to combine them in a multidistrict litigation (MDL). MDLs let several, similar cases move more quickly through the legal process.

DePuy Attune Knee Recall

No Attune knee implants have ever been recalled. But in June 2015, DePuy recalled its Attune Knee Tibial Articulation Surface Instruments. Doctors use the instruments to implant Attune implants during surgery.

“In 2015, DePuy recalled 3,474 defective surgical tools used in Attune knee surgery.”

Source: U.S. Food and Drug Administration

An FDA announcement reported that a small wire coil on the instruments could come off during surgery. If that happened, the coil could fall into the surgical site.

The part, called a Balseal, is small. Surgical staff might not notice it falling into the wound. There was a risk that surgeons might leave it in the patient’s body.

DePuy Attune Knee and FDA Approval

DePuy received FDA approval for Attune in December 2010. The FDA approved it through the agency’s 510(k) clearance process.

The process allows medical devices to make it to market faster. It lets manufacturers skip much of the FDA’s more strenuous approval process.

Attune Knee FDA Approval
To gain FDA approval, DePuy only had to show that the Attune knee system was “substantially similar” to a device already on the market.

DePuy manufactures several other knee replacement implants. This includes one product line that has been around since the 1970s.

DePuy Sigma Knee Replacements

DePuy’s Sigma Knee System is among the company’s most popular knee implants. DePuy introduced it in 1997, a year before Johnson & Johnson acquired the company. Doctors have implanted DePuy Sigma knees in an estimated 1.7 million patients.

DePuy Sigma Knee System
The DePuy PFC Sigma RP-F implant requires surgeons to remove more of the bone, which can lead to complications.

DePuy Low Contact Stress (LCS) Knee System

DePuy introduced its LCS knee replacements in 1977. Surgeons implanted 700,000 of the devices in patients. The company expanded the product line in the 1990s and changed the name to LCS Complete. DePuy still uses components developed for the original design.

DePuy TruMatch Personalized Solutions

DePuy also manufactures software called TruMatch Personal Solutions. TruMatch includes a set of custom surgical instruments and a computer software system. These let surgeons customize the knee replacement based on the patient’s specific anatomy.

DePuy Attune Knee
DePuy Attune Knee Facts
  1. Uses Total knee replacement, revision knee replacement
  2. Complications Tibial loosening, pain, instability, decreased range of motion
  3. Manufacturer DePuy Synthes (a Johnson & Johnson company)

Please seek the advice of a medical professional before making health care decisions.

Terry Turner
Written By Terry Turner Writer

Terry Turner has been writing articles and producing news broadcasts for more than 25 years. He covers FDA policy, proton pump inhibitors, and medical devices such as hernia mesh, IVC filters, and hip and knee implants. An Emmy-winning journalist, he has reported on health and medical policy issues before Congress, the FDA and other federal agencies. Some of his qualifications include:

  • American Medical Writers Association (AMWA) and The Alliance of Professional Health Advocates member
  • Centers for Disease Control and Prevention Health Literacy certificates
  • Original works published or cited in Washington Examiner, MedPage Today and The New York Times
  • Appeared as an expert panelist on hernia mesh lawsuits on the BBC
Edited By
Emily Miller
Emily Miller Managing Editor
Medically Reviewed By
Dr. Aimee V. Hachigian-Gould
Dr. Aimee V. Hachigian-Gould Orthopedic Surgeon

21 Cited Research Articles writers follow rigorous sourcing guidelines and cite only trustworthy sources of information, including peer-reviewed journals, court records, academic organizations, highly regarded nonprofit organizations, government reports and interviews with qualified experts. Review our editorial policy to learn more about our process for producing accurate, current and balanced content.

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