A study on the biomechanical properties of cancellous bone across different regions of the proximal humerus.

ABSTRACT:

Objective

This study compared the mechanical properties of the proximal humerus with intact cancellous bone against those with region-specific defects, to clarify the role of cancellous bone in load transmission.

Methods

Eighteen proximal humeral specimens were scanned via micro-CT, and bone mineral density (BMD) was quantified at the anatomical neck, surgical neck, and tubercle base. Specimens were divided into three groups (n = 6) by randomized block design: Group A (anatomical neck defect), Group B (surgical neck defect), and Group C (tubercle base defect). Each group underwent biomechanical testing under a 355 N axial load simulating arm abduction. Surface displacement and strain were measured before and after cancellous bone removal using digital image correlation.

R

SUBMITTER: Zhang J 

PROVIDER: S-EPMC12667115 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature