| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Biological Materials Science
|
| Presentation Title |
Internal Strain Mapping for Native and Implanted Glenoids |
| Author(s) |
Yuxiao Zhou, Gregory Lewis, April Armstrong, Jing Du |
| On-Site Speaker (Planned) |
Jing Du |
| Abstract Scope |
The most common cause for the failure total shoulder replacement surgeries is loosening of the glenoid component implant. Mechanical factors are widely reported to be crucial in glenoid component loosening. In this study, mechanical testing coupled with micro X-ray computed tomography (micro-CT) is carried out on a human cadaveric glenoid specimen. Several physiologically realistic loading conditions were applied on the native and implanted specimen. Digital volume correlation is used to compute the 3D full-field strain inside the glenoid. The measured strain distributions are in good agreement with the results of analytical models, especially for the two eccentric loadings conditions. The overall effective moduli of the native and implanted glenoid were similar. However, under the same anteriorly/posteriorly eccentric loading conditions, a wider range of strain appeared inside the implanted glenoid. The increased strain range can be attributed to the glenoid component placement, which increased the bending moment inside the glenoid. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Biomaterials, Characterization, Mechanical Properties |