READ MORE ZIMMER DUROM CUP LEGAL NEWS
The senator also asked Dvorak for the exact details of the complaints the company has received since January 2008.
Surgeon Larry Dorr had raised concerns about the Zimmer replacement hip cup, known as a Durom cup, two years ago, and Zimmer responded by suspending sales of the device in the US so that surgeons could be trained in how to use the device properly, reports the news source.
The orthopedic device company recently said it "welcomes the opportunity" to speak with Senator Grassley, according to the news provider.