Specifications for machining the bovine cortical bone in relation to its microstructure

Abstract Until date, many devices have been developed for cutting human bones during orthopedic surgeries. However, bones are anisotropic material, and their machining characteristics depend on the tool feed direction. In this study, microcutting of the bovine cortical bone is performed and its stru...

Full description

Saved in:
Bibliographic Details
Published in:Journal of biomechanics 2009-12, Vol.42 (16), p.2826-2829
Main Authors: Sugita, Naohiko, Mitsuishi, Mamoru
Format: Article
Language:English
Subjects:
Accuracy
Animals
Biomedical material cutting
Bone density
Canals
Cattle
Crack initiation
Crack propagation
Cutting forces
Cutting tools
Femur - cytology
Femur - surgery
Fracture analysis
In Vitro Techniques
Machinability
Microstructure
Osteotomy - methods
Physical Medicine and Rehabilitation
Secondary osteon
Studies
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Abstract Until date, many devices have been developed for cutting human bones during orthopedic surgeries. However, bones are anisotropic material, and their machining characteristics depend on the tool feed direction. In this study, microcutting of the bovine cortical bone is performed and its structure observed under a microscope. Furthermore, the formation of cutting chips and measurement of the cutting force during bone machining are dynamically observed while considering the anisotropy of bone tissue. In particular, the fracture of secondary osteons and crack propagation in bones are observed and analyzed. The results indicate that when the cut depth exceeds 20 μm and is greater than the interval of concentric lamellae, cracks are formed together with chips. A new method for bone machining is proposed. This method is based on the characteristics of crack propagation in bones and is expected to produce low mechanical stress and realize highly efficient and precise machining of living tissues such as bones.
ISSN:0021-9290
1873-2380
DOI:10.1016/j.jbiomech.2009.08.017