DePuy Orthopaedics, Inc., ASR Hip Implant
The DePuy ASR MDL was centralized in December 2010 to coordinate claims that the ASR line of metal-on-metal hip implants failed at higher-than-expected rates, releasing metal debris into surrounding tissue and requiring many patients to undergo revision surgery. The litigation developed an extensive factual record on metal-ion toxicity, implant wear mechanics, and the company's internal knowledge of failure-rate data, and that record substantially shaped the docket's major settlement programs.
With 113 actions still pending after more than a decade, this docket sits in a mature, post-settlement-program phase rather than an early bellwether phase. What now drives resolution risk for the remaining actions is less a docket-wide general-causation question — that was substantially litigated and addressed through settlement structure years ago — and more the individual facts of each remaining claim: diagnosis timing, revision-surgery history, and whether a given claim fits within or falls outside the parameters that governed earlier settlement rounds.
This pattern is common across metal-on-metal and modular hip-implant MDLs generally: an initial phase driven by aggregate settlement negotiation over a well-characterized failure mechanism, followed by a longer residual phase where remaining claims are resolved individually against an established factual and legal framework rather than through renewed general-causation litigation. Understanding which phase a docket occupies is essential to reading its duration risk correctly — a docket with 113 pending actions after fifteen years does not carry the same resolution-timeline profile as a docket with a similar pending count in its second year.
Criterica Intelligence frames this kind of phase-aware structural read as central to regulated outcomes intelligence: the same raw pending-action number means very different things depending on where a docket sits in its lifecycle, and the platform tracks that context across every active MDL rather than treating pending-action counts as standalone signals.
Claims across many jurisdictions raised common factual questions about the design and failure rate of the ASR metal-on-metal hip implant system and what the manufacturer knew about that failure rate, making coordinated pretrial proceedings efficient.
A docket of this age and history typically retains a residual population of later-diagnosed revision cases or claims that fell outside earlier settlement-program parameters, even after the bulk of filed claims have resolved.
General causation — whether the implant design was defective and could cause the alleged injuries — was substantially addressed through the litigation record and settlement structure years ago; the current posture is about individual claim facts fitting into that established framework.
It proceeds through remaining pretrial motions toward an individual trial, evaluated against the extensive causation and defect record already built during the docket's active litigation years rather than starting from an unresolved scientific question.
Statistics shown reflect historical or illustrative model outputs derived from real case data. They are not predictions or guarantees of any individual outcome. Litigation results depend on facts, jurisdiction, judge, and counsel, and vary case by case. Model accuracy is subject to selection effects and changing legal dynamics.