Taper Lock Failure
During hip replacement surgery with the Stryker Accolade hip replacement system, the Stryker LFIT V40 femoral head is fastened to the femoral hip stem trunnion (a pin or pivot forming one of a pair that supports the hip replacement structure) at the femoral neck through the Stryker LFIT V40 taper lock (a system that locks the system together without cement). Most complaints about this hip replacement system relate to a high incidence of taper lock failure.
Metal Poisoning from Taper Lock Failure in the Stryker Accolade Hip Replacement System
Taper lock failure can cause a variety of complications and symptoms, including pain, inflammation, loss of mobility, and joint instability. It can also cause metal poisoning when tiny metal particles are worn off and released into the body, with the potential to damage soft tissue and bone near the joint and hip implant.
The FDA warns that certain patients who have received the Stryker Accolade hip replacement system using the Stryker LFIT V40 femoral head may be at risk for increased wear of the device and adverse reactions to metal debris resulting from wear.
As symptoms of an adverse reaction to metal debris are general, patients may not connect them to failure of the Stryker LFIT V40 femoral head used in their hip replacement system. These symptoms may include:
- General hypersensitivity reactions (skin rash)
- Cardiomyopathy (chronic disease of the heart muscle)
- Renal (kidney) function impairment
- Thyroid dysfunction (fatigue, weight gain, intolerance to cold, discomfort of the neck)
- Neurological sensory changes (auditory or visual impairment)
Cobalt poisoning is a particular concern when the recalled Stryker LFIT V40 femoral head was used in the Stryker Accolade hip replacement system. Although this mineral is naturally occurring in the body, excess levels are toxic and can lead to serious side effects. Excess cobalt in the bloodstream can cause inflammation and damage to the surrounding bone and tissue.
Testing for Stryker Accolade Hip Replacement System Failure
If you are experiencing symptoms such as pain, inflammation, or difficulty walking after a Stryker Accolade hip replacement using the Stryker LFIT V40 femoral head, see your doctor for examination and evaluation. An X-ray may be ordered to examine the bone and implant placement. An MRI can provide more specific information, and lab work can help determine the levels of metals in the blood.
The problem is that inflammatory responses from metal sometimes occur with few or no recognizable symptoms until damage has already been done to the surrounding tissue and bone has been lost. If you have had a Stryker Accolade hip replacement with the Stryker LFIT V40 femoral head and you suspect that the device has failed, seek medical attention as soon as possible.