Measurements of the Static Friction Coefficient Between Bone and Muscle Tissues

作者：Shacham Sharon; Castel David; Gefen Amit^*

来源：Journal of Biomechanical Engineering, 2010, 132(8): 084502.

DOI：10.1115/1.4001893

• tissue tribology
• biomechanical model
• finite element analysis
• mechanical properties
• porcine tissues

This study aimed at measuring the static coefficient of friction (mu) between bone and skeletal muscle tissues in order to support finite element (FE) modeling in orthopaedic and rehabilitation research, where such contact conditions need to be defined. A custom-made friction meter (FM) that employs the load cell and motion-controlled loading arm of a materials testing machine was designed for this study. The FM was used to measure mu between fresh ulna bones and extensor muscles surrounding the ulna, which were harvested from five young adult pigs. Mean bone-muscle mu were between 0.36 and 0.29, decreased with the increase in loads applied on the bone (p < 0.05) and plateaued at a mean similar to 0.3 for loads exceeding 4 N. Hence, for FE modeling of bone-muscle contacts through which loads with magnitudes of kgs to 10s-of-kgs are transferred, assuming mu of similar to 0.3 appears to be appropriate. [DOI: 10.1115/1.4001893]

• 出版日期2010-8