Design and optimisation of patient-specific porous femoral stems.

ABSTRACT:

Background

Total hip replacement surgery is a well-established intervention that restores joint function and provides excellent outcomes for patients. In some cases, bone resorption caused by stress shielding leads to implant loosening. Stress shielding occurs because implants are much stiffer than bone and transmit a significant proportion of the load, leaving the surrounding bone to carry less load compared to an intact femur.

Methods

To address stress shielding, we aimed to design patient-specific additively manufactured porous femoral stems with reduced stiffness. Diamond lattice structure test specimens of varying porosities were manufactured and tested to measure elastic moduli and yield strengths. These properties were used in subsequent implant optimisation based on

SUBMITTER: Safavi S 

PROVIDER: S-EPMC12619321 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature