Texas ConforMIS Knee Replacement LawyerTexas attorneys have filed the first lawsuit on behalf of a woman who was injured by the ConforMIS iTotal G2, an allegedly defective knee replacement that can loosen prematurely and require revision surgery.

Need a Texas ConforMIS Knee Replacement Lawyer? Collen A. Clark is a true advocate for his clients and is passionate about helping Texans that have been injured or wronged. If you or a loved one was injured by the iTotal G2 knee implant, you should contact our lawyers immediately. You may be entitled to compensation by filing a lawsuit in Texas.

What is the ConforMIS iTotal G2?

ConforMIS Inc., a Massachusetts-based medical device company, manufactures the iTotal G2 custom knee replacement. It was approved by the FDA in January 2011. The iTotal system incorporates 3D technology to generate a custom-fit knee implant based on CT scans of the patient’s knee.


Components of the iTotal G2 include a femoral implant, fitted at the base of the femur, and a tibia tray, fitted at the head of the tibia. Between these components are two polypropylene (plastic) spacers. The spacers are supposed to lock onto the tibial tray, but recent lawsuits claim they can dislodge or loosen.

510(k) Approval

The ConforMIS iTotal G2 was approved through the FDA’s 510(k) approval process, which does not require clinical testing to prove that the device is safe and effective — manufacturers must only show that the device is “substantially equivalent” to a device already on the market.

ConforMIS Knee Lawsuit Filed in Texas

October 2014 — A lawsuit (PDF) has been filed against ConforMIS in federal court in Houston, Texas. The plaintiff, 65 year-old Mary Jane Martine, is a former nurse who was injured by two separate defective iTotal G2 knee replacements. They were implanted in October 2012 and April 2013. Both failed in December 2013 and had to be removed surgically.

During the revision surgery in January 2014, doctors found that the spacer in her right knee had dislocated from its attachment on the tibia tray and was turned and twisted up into her femur. The surgeon also discovered that the left knee implant was loose and caused bone damage.

What is the problem?

Lawsuits allege that the FDA received about 30 reports of spacer dislodgment or tibia tray loosening between the launch of the iTotal G2 and March 1, 2014.

According to the complaint, ConforMIS submitted another 510(k) application to the FDA in April 2013, asking permission to modify the iTotal G2 to fix the problem:

“These changes to the iTotal were necessary because when the knee was flexed, the femoral component exerts an inordinate amount of pressure on the posterior side of the lateral tibia spacer. This led to a grinding of the spacer, and in some cases spacer dislodgment and/or tibia tray loosening.”

ConforMIS allegedly knew that the original design was defective, but they did not issue a recall or tell surgeons about the problem. When Mary Jane Martine had a defective knee implanted in April 2013, her surgeon was not aware of the risk.

Safety Risks

ConforMIS is accused of failing to provide warnings about the following risks, which they knew could potentially injure patients:

  • High rate of failure of the iTotal G2
  • Tibia spacer dislodgment
  • Tibia tray loosening
  • Chronic pain
  • Surgery to remove the iTotal G2
  • Painful and prolonged recovery

Class II Recall Issued for ConforMIS iTotal Knee Replacement

In July 2012, ConforMIS issued an urgent warning to surgeons about the iTotal CR-Cruciate knee replacement and updated the surgical technique guide. In August, the FDA ordered a Class II recall for nearly 1,500 of the implants.

ConforMIS Knee Class Action

The Clark Firm, LLP is nationally recognized as a class action law firm, but our attorneys are filing individual lawsuits instead of a ConforMIS knee class action. Defective knee replacements can cause severe injuries, including permanent disability. We believe individual lawsuits are the best way we can advocate for each client’s right to justice and compensation.

Need a ConforMIS Knee Replacement Lawyer in Texas?

Collen A. Clark is a true advocate for his clients and is passionate about helping Texans that have been injured or wronged.

Collen’s amazing success in the courtroom and well known dedication to his clients has earned him the recognition of his peers as one of The Top Trial Lawyers in Texas.”

The Clark Firm has assembled a team of trial lawyers with more than 100 years experience, participation in over 600 jury trials and $260 million in verdicts and/or settlements. Please use the form below to contact our Texas knee replacement lawyers for a free lawsuit review.