Mealey's (August 12, 2019, 1:40 PM EDT) -- BALTIMORE — A U.S. District Court for the District of Maryland judge on Aug. 5 partially granted a motion to dismiss claims in the total hip arthroplasties (THA) track of the Smith & Nephew’s Birmingham Hip Resurfacing (BHR) multidistrict litigation, finding that “a tripartite approach” is necessary for hybrid systems, resulting in some of the claims being preempted by federal law while others survive (In re Smith & Nephew Birmingham Hip Resurfacing [BHR] Hip Implant Products Liability Litigation, MDL Docket No. 2775, No. 17-md-2775, D. Md., 2019 U.S. Dist. LEXIS 131067)....