Joas v. Zimmer, Inc., No. 16-3957 (7th Cir. 2018)Annotate this Case
Joas underwent knee replacement at a Wisconsin hospital and received a Zimmer NexGen Flex implant. Within a few years, he began experiencing pain in his new knee. X-rays confirmed that the implant had loosened and required a surgical fix. Joas brought multiple claims against Zimmer. His case was transferred to a multidistrict litigation, where it was treated as a bellwether case. Applying Wisconsin law, the presiding judge granted Zimmer summary judgment. The Seventh Circuit affirmed, declining to reinstate a single claim based on a theory of inadequate warning. The court predicted that the Wisconsin Supreme Court would follow the majority of states and adopt the “learned intermediary” doctrine, which holds that the manufacturer of a medical device has no duty to warn the patient as long as it provides adequate warnings to the physician. In addition, Joas has not identified any danger that Zimmer should have warned him about. Joas has no evidence to support causation. Joas did not select the NexGen Flex implant, so the information would not have caused him to change his behavior. His doctor selected the product, making his decision based on his own past experience, not on any marketing materials or information provided by Zimmer.