Understanding the role of head size and neck length in micromotion generation at the taper junction in total hip arthroplasty.

ABSTRACT: Modular hip implants allow intra-operative adjustments for patient-specific customization and targeted replacement of damaged elements without full implant extraction. However, challenges arise from relative micromotions between components, potentially leading to implant failure due to cytotoxic metal debris. In this study magnitude and directions of micromotions at the taper junction were estimated, aiming to understand the effect of variations in head size and neck length. Starting from a reference configuration adhering to the 12/14 taper standard, six additional implant configurations were generated by varying the head size and/or neck length. A musculoskeletal multibody model of a prothesized lower limb was developed to estimate hip contact force and location during a normal walking t

SUBMITTER: Bologna FA 

PROVIDER: S-EPMC10944531 | biostudies-literature | 2024 Mar

REPOSITORIES: biostudies-literature