Retrieval Findings of Recalled Dual-Taper Hips.

ABSTRACT:

Background

The recent high-profile recalls of several dual-taper hip designs pose questions regarding why those designs perform poorly. We aimed to characterize taper damage in 1 recalled design to understand failure mechanisms to inform surgeons on which patients should be considered at risk of revision and when to revise.

Methods

High-precision measurement equipment was used to characterize the metal loss from the neck-stem interface of 116 retrieved Rejuvenate femoral stems (Stryker Howmedica Osteonics) revised because of an adverse reaction to metal debris. Head-neck taper surfaces were also investigated, and clinical and laboratory data were examined.

Results

The neck-stem junction of each implant was moderately to severely corroded and showed a characteristic we

SUBMITTER: Di Laura A 

PROVIDER: S-EPMC6211785 | biostudies-literature | 2018 Oct

REPOSITORIES: biostudies-literature