A study in the Journal of Bone and Joint Surgery last month identified five cases of catastrophic trunnion dissociation in Stryker Accolade TMZ Femoral Hip Stems. What does that mean in lay terms? It means that the hip implant device fails painfully in a small percentage of patients with certain risk factors approximately 7 to 7.5 years after surgery. And the $1.4 billion settlement for patients with defective Stryker hip implants following hip replacement surgery may not be the end of the lawsuits for the company.

Further information now available from Australia suggests the problem is with Stryker’s LFIT Anatomic CoCR V40 femoral head which was a component of Stryker Accolade TMZF, Accolade 2, Meridian and Citation hip implants.

If you experience hip implant failure or crippling pain with one of these Stryker hips, particularly if it includes the LFIT Anatomic CoCR V40 femoral head, you may be entitled to compensation through a personal injury lawsuit. Our Philadelphia trial lawyers are prepared to review your medical records, evaluate your options with you, and file a lawsuit to recover compensation, if necessary. If you suffer a metal-on-metal hip implant failure, call 1-800-590-4116 to speak to Jim McEldrew or one of our other attorneys.

About the Metal-on-Metal Hip Implant Defects

Stryker is a manufacturer of hip replacement systems. Several models of Stryker hip implants have already been in litigation over patient injuries for a few years. These patients have reported debilitating pain, crippling tissue and muscle damage, and premature failure of their hip replacement.

Metal-on-metal hip implants like these have experienced failures across several manufacturers. In addition to the Stryker implants, the other potentially problematic devices include the Zimmer Durom Cup, Wright Profemur-Z hip system, the DePuy ASR and certain DePuy Pinnacle metal implants.

The New Stryker Hip Implant

The Accolade TMZ Femoral Hips at issue in the study were available for use from 2001 to 2011. In the patients experiencing failure, the adverse event was clustered around 7 to 7.5 years after surgery. It is believed that severe corrosion led to the dissociation of the femoral head from the trunnion (trunnionosis). In addition to the five patients identified, the journal article mentions two previously known cases of catastrophic trunnion dissociation in total hip arthroplasty.

Patient Characteristics

The journal article suggests that there may be other patients who have not come forward yet or who have not experienced this problem yet but will in the future. The typical patient who might suffer this problem after modular total hip arthroplasty is male, taller than 5 ft 10 inch and weighing greater than 180 pounds. It is estimated that this demographic puts greater load on the femoral head-trunnion interface. The patient group explored had cobalt-chromium alloy femoral heads combined with a titanium trunnion.

Update: The Australia Stryker LFIT

Australia has issued a hazard alert for certain femoral heads used in hip replacement surgeries.  Specifically, a range of LFIT Anatomic CoCR V40 femoral heads manufactured by Stryker before 2011.  Australia, in consultation with Stryker Orthopaedics, expressed concerns about a higher than expected incidence of taper lock failures.

The taper lock connects the femoral head to the femoral neck.  If it fails, a patient can experience broken bones, joint instability, pain, inflammation, loss of mobility, leg length discrepancy and the need for revision surgery.

The impacted component was used in the Stryker Accolade TMZF, Accolade 2, Meridian and Citation hip implants.  The Australian alert urged orthopedic surgeons to monitor patients with the component at issue for fractured hip stem trunnion, increased metallic debris, bone fixation strength, and disassociation of the femoral head from the hip stem.

Some legal commentary in the United States is already suggesting that a recall by Stryker is imminent.  Stryker has already recalled other lines of its metal-on-metal hip implants due to complaints of inflammation, metal poisoning, inflammation and organ damage.  Stryker is expected to pay out more than $1 billion total to plaintiffs in the previous litigation.

The Stryker Hip Implant Lawsuits

Stryker previously recalled its Rejuvenate Modular and ABG II Modular-Neck Hip Stems in 2012. It also recalled the Accolade TMZF Plus Hip Stem for packaging and manufacturing errors in 2012 and 2013. The defective metal-on-metal hip devices resulted in the implant loosening for some patients and toxic metals release into their bodies. Stryker has been in litigation with these patients over the past few years. The lawsuits allege that the company inadequately tested the products and failed to warn patients and doctors about the risk of side effects. Stryker previously agreed to pay at least $1 billion to settle these lawsuits.

About McEldrew Young Purtell Merritt

Jim McEldrew and Eric Young engage in litigation against large pharmaceutical and medical device manufacturers on behalf of patients and whistleblowers. If you have been injured by a defective drug, medical device or other form of medical malpractice, please call 1-215-545-800 to speak to Jim McEldrew concerning your legal rights.