Microhardness distribution of the fibula diaphysis in human skeleton
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2019-10-06 |
| Journal | Chin J Anat Clin |
| Authors | Jiangzhao Wang, Guobin Liu, Xiaojuan Zhang, Sheng Li, Bing Yin |
| Institutions | Nantong University, Hebei Medical University |
Abstract
Section titled āAbstractāObjective
To explore the distribution characteristics of bone tissue microhardness in fibula diaphysis.
Methods
Three fresh right fibulae were obtained from 3 cadaver donors (male, 62 years old; female, 45 years old; male, 58 years old, all without previous chronic medical history). Each of the fibula diaphysis was divided into six parts, bone specimens with a thickness of 3mm were taken from the middle of each part by using a high-precision low-speed diamond saw. Each specimen was divided into four regions to measure the bone tissue microhardness. Five effective indentations were performed in each region to obtain microhardness values with the Vickers methord. The microhardness distribution characteristics of different parts and regions in each part were analyzed. The differences in bone tissue microhardness of different parts and regions were compared.
Results
A total of 18 bone specimens were obtained in this study. Three hundred and sixty effective indentation tests were performed in 72 regions and the microhardness values were obtained. The mean microhardness of the anterior, medial, posterior and lateral cortex of the 3 fibulae diaphysis were (46.81Ā±4.51) HV, (49.69Ā±4.05) HV, (51.19Ā±4.19) HV and (50.44Ā±4.10) HV, respectively. The microhardness of the anterior cortex was the lowest, and that of the posterior cortex was the highest; the differences among the different regions were statistically significant (F=18.590, P 0.05). Within the same part, the difference of microhardness among different regions at the part 1-4 was statistically significant (all P values 0.05).
Conclusions
This study reports that the microhardness of bone tissue in different regions and different parts of the fibula diaphysis are difference. Understanding the difference in microhardness between different regions and parts is important. Because it is helpful for orthopedic surgeons to select the appropriate direction in the autologous fibula grafting, to reduce the occurrence of graft fatigue failure. The results can also provide data support for the manufacture of 3D printed bionic bone with higher precision.
Key words:
Fibula;Ā Cortical bone;Ā Microhardness;Ā Indentation technique;Ā Biomechanics