Full-Field Experimental Analysis of the Influence of Trabecular Microstructural Parameters on the Mechanical Properties of Trabecular Bone Within Osteoarthritic Humeral Heads

Description

The presentation, led by Jonathan Kusins, focuses on a study examining the impact of microstructural parameters on the mechanical properties of trabecular bone, particularly in the context of total shoulder arthroplasty (TSA). The study aims to understand how trabecular bone properties influence the fixation stability of joint replacement designs, emphasizing the need for bone preservation. Through the analysis of trabecular bone cores from patients undergoing TSA due to osteoarthritis, the research employs a custom mechanical testing device that allows for compressive loads within a micro CT scanner. This setup captures detailed strain measurements during loading, offering insights into the relationships between bone density, morphometric parameters, and the ultimate strength of the trabecular bone. Key findings indicate a strong correlation between bone mineral content and ultimate strength, while local strain measures reveal significant strain magnitudes occurring prior to failure. The research aims to further explore mechanical testing on whole bone specimens to enhance the understanding of joint replacement mechanics. The findings contribute valuable data on the predictors of trabecular bone strength, showcasing the implications for future joint replacement designs.

DOI: 10.1302/3114-220873

Specialties