Omni Apex K2 Hip Implant LawsuitAustralian authorities restricted sales of the Omni Apex K2 hip replacement after it was linked to a 9.3% three-year failure risk. More recently, studies have raised concerns about metal corrosion, chronic pain, and other side effects that require revision surgery.

Need a Texas Apex K2 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 a defective hip replacement, you should contact our lawyers immediately. You may be entitled to compensation by filing a lawsuit in Texas.


The Apex K2 is a modular hip replacement made by Massachusetts-based OMNI Life Sciences. It consists of a metal femoral stem and modular (interchangeable) metal components in the femoral neck and head.

What is the problem?

The Apex K2 was approved by the FDA in 2004 with a 510(k) application, which means it did not undergo rigorous clinical trials because it was similar to other hip implants on the market. Unfortunately, “similar” does not always mean safe.

Apex K2 Linked to 9.3% 3-Year Failure Risk

In recent years, questions have been raised about the risks of the Apex K2. In October 2012, the Australian Therapeutic Goods Administration (TGA) pulled approval and warned about a higher-than-expected rate of revision surgery.

Hip implants are supposed to last from 10-20 years or more. Unfortunately, the Apex K2 was linked to a 9.3% failure-rate within three years and a 5.5% failure-rate within one year in an analysis of data from the Australian National Joint Replacement Registry (NJRR).

Study Finds Metal Corrosion Risk from Apex K2 Hip Implant

Modular components help a surgeon custom-fit the Apex K2 implant to each patient, but it also creates a metal-on-metal interface between the femoral stem and neck.

In October 2015, the Journal of Arthroplasty published a study warning about a risk of metal corrosion and fretting from the anti-rotation pin on 10 separate Apex K2 femoral stems.

Complications noted in the study include:

  • Loosening
  • Subsidence
  • Migration
  • Fretting and corrosion
  • Dislocation
  • Deep joint infections
  • Sensitivity reactions to metal
  • Revision surgery

What is ALVAL?

The Apex K2 has been associated with cases of ALVAL, short for “aseptic lymphocyte dominated vasculitis-associated lesions.” This complication can occur when irritating metal particles are released into a patient’s body from a corroding hip replacement.

Symptoms of ALVAL

  • Chronic pain
  • Soft-tissue growths known as pseudotumors
  • Swelling and inflammation
  • Bone loss or tissue necrosis
  • Metal poisoning (metallosis)
  • Limited mobility

Apex K2 Class Action

The Clark Firm, LLP is nationally recognized as a class action law firm in Texas, but our attorneys are not filing an Apex K2 class action at this time. Instead, we are filing individual lawsuits on behalf of people who experienced severe side effects or needed surgery after their hip replacement failed.

Need an Apex K2 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 Apex K2 lawyers for a free lawsuit review.