For a while now, Stryker has had issues with some of its hip replacement artificial implants. One troublesome type in particular has been the LFIT V40 series. Specifically, in some of these Stryker hips corrosion forms where the femoral head connects with the femoral stem. This would often lead to taper lock failure, or a compromised joint that would loosen and cause metallosis.
This issue helped lead to a recall in 2016 and an expanded recall in 2018. One of the reasons for the 2018 recall was a higher-than-expected number of reports of the femoral head disassociating (disconnecting) from the femoral stem.
What Is Artificial Hip Disassociation?