Patients who received a failed Biomet Vanguard knee implant can pursue a Biomet Vanguard knee replacement lawsuit against Zimmer Biomet as an individual product liability case. There is no multidistrict litigation or class action specific to the Vanguard system. Cases are being filed one at a time in federal and state courts, most of them focused on the Regenerex patella component, and at least one Vanguard case reached a settlement in 2025.1AboutLawsuits.com. Settlement in Biomet Vanguard Knee Replacement Lawsuit
Which Vanguard Components Are Driving the Lawsuits
The Vanguard is a total knee replacement system originally developed by Biomet in Warsaw, Indiana, and now sold by Zimmer Biomet after the two companies merged in 2015. The line includes several variants, among them the Vanguard Complete Knee System, the SSK 360 Revision Knee System, and the Vanguard XP.2Drugwatch. Knee Replacement Recalls Not every part of the system has generated litigation. A few specific components have.
The Regenerex Three-Peg Patella
The component behind most Vanguard lawsuits is the Regenerex three-peg patella, which anchors the kneecap portion of the implant to the bone using three small pegs. Zimmer Biomet initiated a recall on March 22, 2017 after reports that the pegs were shearing off inside patients’ knees. The FDA classified it as a Class 2 recall covering 8,154 units in the United States and Canada.3FDA. Recall Z-2068-2017 – Regenerex Patella When the pegs fracture, the kneecap component loosens, causing pain, instability, and swelling, and revision surgery is typically required to remove the failed hardware.4AboutLawsuits.com. Biomet Signature Vanguard Knee Replacement Lawsuit Over Regenerex Patella Pegs
The Vanguard XP Withdrawal
Zimmer Biomet voluntarily withdrew the Vanguard XP, a bicruciate-retaining implant, from the market in 2019 after registry data showed high early failure rates. The Michigan Arthroplasty Registry Collaborative Quality Initiative recorded a 9.9% revision rate at three years and 12.0% at five years, roughly double the rate considered acceptable. The main reasons for revision were pain, arthrofibrosis, and aseptic loosening. Registry analysis found that every surgeon who used the device saw higher failure rates while implanting it, and their outcomes returned to normal once they stopped. No formal FDA recall was issued and no notice was filed with the agency.5PubMed Central. Vanguard XP Bicruciate-Retaining Total Knee Implant Outcomes
Other Recalled Vanguard Components
Additional recalls have affected the Vanguard line, though these have played a smaller role in the litigation. In February 2017, Vanguard Total Knee tibial tray plates were recalled over potential alumina inclusion that could cause cracking and separation.6iData Research. Complete Summary of Knee Replacement Recalls In May 2018, two lots of E1 Vanguard PS Tibial Bearings were recalled after 12mm and 14mm sizes were mixed in packaging.7FDA. Recall Z-2289-2018 – Vanguard Complete Knee System Zimmer Biomet, including its pre-merger predecessors, recorded at least 355 knee-related recalls between 2003 and 2018.2Drugwatch. Knee Replacement Recalls
What Plaintiffs Are Alleging
Vanguard complaints focus on defective design and manufacture, failure to warn patients and surgeons of known risks, and marketing that downplayed the likelihood of failure. In the Regenerex cases, plaintiffs cite what one complaint called a “high incidence” of peg shearing and breakage, and they allege that Zimmer Biomet continued selling the device without adequate warnings and failed to issue timely post-sale safety notices.4AboutLawsuits.com. Biomet Signature Vanguard Knee Replacement Lawsuit Over Regenerex Patella Pegs
The injuries described across lawsuits and FDA adverse event reports follow a consistent pattern: implant loosening, severe pain, joint instability, swelling, and the need for revision surgery. One MAUDE report described a 58-year-old woman who received a Vanguard knee in 2020 and afterward experienced constant pain, limited range of motion, balance problems, swelling, and trouble bearing weight.8FDA. MAUDE Adverse Event Report 19310920 Revision procedures are longer and more complex than the initial replacement, and they carry greater risks of bone fracture, nerve damage, infection, and blood clots.9Legal Herald. Knee Implant Lawsuits
Where the Cases Stand
Vanguard cases proceed individually. No MDL has been established and no class action has been certified for the Vanguard system.
A recent example is Hecker v. Zimmer Biomet, filed May 2, 2025 in the U.S. District Court for the District of New Jersey. Plaintiff Shawn Hecker alleged that all three pegs in his Regenerex patella, implanted in 2016, broke inside his knee. During revision surgery, surgeons reportedly found the patellar implant had come loose and that all three anchoring pegs had sheared off inside the joint.10HarrisMartin Publishing. New Federal Lawsuit Targets Biomet Knee System Regenerex Patella
On the settlement side, the parties in Diana Cantu v. Zimmer US, Inc. et al filed a notice of settlement on August 8, 2025 and indicated they expected to finalize the deal within 60 days. The terms were not disclosed.1AboutLawsuits.com. Settlement in Biomet Vanguard Knee Replacement Lawsuit
Legal Theories and the Evidence Problem
Vanguard suits are brought primarily under strict product liability, which requires the plaintiff to show the implant was defective rather than to prove traditional negligence. Common counts include design defect, manufacturing defect, and failure to warn.9Legal Herald. Knee Implant Lawsuits
One practical hurdle catches many patients off guard. Manufacturers often demand physical inspection of the removed implant during litigation, and hospitals sometimes discard failed devices as medical waste after revision surgery. Courts have dismissed claims where the explanted hardware was not preserved.9Legal Herald. Knee Implant Lawsuits Anyone considering a lawsuit should ask the surgical team to retain the removed components before the procedure.
Vanguard clearance came through the FDA’s 510(k) pathway, which lets a device reach market by showing it is substantially equivalent to an already-approved product rather than through new clinical trials.11FDA. 510(k) Premarket Notification – K121149 That clearance route is a recurring point in the broader design-defect arguments plaintiffs make.
Vanguard Cases Versus Other Zimmer Biomet Knee Litigation
Vanguard lawsuits should not be confused with the larger, better-known Zimmer knee litigation. The NexGen CR-Flex generated more than 900 federal cases consolidated in an Illinois MDL before U.S. District Judge Rebecca Palmeyer, where the first bellwether trial resulted in a defense verdict.12Morgan & Morgan. Zimmer NexGen Knee Replacements Failing Early The Zimmer Persona Trabecular Metal Tibial Plate was recalled in 2015 after roughly 12,000 uncemented units were linked to loosening.13Top Class Actions. Zimmer Persona Knee Implant Recall Due to Loosening, Possible Failure Those are different products and different legal proceedings; a claim over a Vanguard implant does not join either one.
Zimmer Biomet’s annual filings acknowledge ongoing risk from “product liability, intellectual property and commercial litigation losses,” though the company does not publicly disclose reserves tied specifically to knee replacement lawsuits.14SEC. Zimmer Biomet Annual Report to Shareholders For patients whose Vanguard implants have failed, the path forward is an individual case, filed within their state’s statute of limitations, backed where possible by the preserved explant.