A novel primary stability test method for artificial acetabular shells considering vertical load during level walking and shell position.

ABSTRACT: Uncemented acetabular shell primary stability is essential for optimal clinical outcomes. Push-out testing, rotation testing, and lever-out testing are major evaluation methods of primary stability between the shell and bone. However, these test methods do not consider shell loads during daily activity and shell installation angle. This study proposes a novel evaluation method of acetabular shell primary stability considering load during level walking and acetabular installation angles such as inclination and anteversion. To achieve this, a novel primary stability test apparatus was designed with a shell position of 40° acetabular inclination and 20° anteversion. The vertical load, corresponding to walking load, was set to 3 kN according to ISO 14242-1, which is the wear test standard for

SUBMITTER: Yoshida K 

PROVIDER: S-EPMC10903903 | biostudies-literature | 2024

REPOSITORIES: biostudies-literature