Interfragmentary surface area as an index of comminution severity in cortical bone impact

Christina L Beardsley; Donald D Anderson; J. Lawrence Marsh; Thomas D Brown

doi:10.1016/j.orthres.2004.09.008

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Interfragmentary surface area as an index of comminution severity in cortical bone impact

Journal article

Open access

Peer reviewed

Interfragmentary surface area as an index of comminution severity in cortical bone impact

Christina L Beardsley, Donald D Anderson, J. Lawrence Marsh and Thomas D Brown

Journal of orthopaedic research, Vol.23(3), pp.686-690

2005

DOI: 10.1016/j.orthres.2004.09.008

PMCID: PMC2194755

PMID: 15885492

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Abstract

A monotonic relationship is expected between energy absorption and fracture surface area generation for brittle solids, based on fracture mechanics principles. It was hypothesized that this relationship is demonstrable in bone, to the point that on a continuous scale, comminuted fractures created with specific levels of energy delivery could be discriminated from one another. Using bovine cortical bone segments in conjunction with digital image analysis of CT fracture data, the surface area freed by controlled impact fracture events was measured. The results demonstrated a statistically significant ( p < 0.0001) difference in measured de novo surface area between three specimen groups, over a range of input energies from 0.423 to 0.702 J/g. Local material properties were also incorporated into these measurements via CT Hounsfield intensities. This study confirms that comminution severity of bone fractures can indeed be measured on a continuous scale, based on energy absorption. This lays a foundation for similar assessments in human injuries.

Comminution

Bone

Fracture energy

Injury severity

Details

Title: Subtitle: Interfragmentary surface area as an index of comminution severity in cortical bone impact
Creators: Christina L Beardsley - Department of Biomedical Engineering, The University of Iowa, 2181 Westlawn, Iowa City, IA 52242, USA
Donald D Anderson - Department of Biomedical Engineering, The University of Iowa, 2181 Westlawn, Iowa City, IA 52242, USA
J. Lawrence Marsh - Department of Biomedical Engineering, The University of Iowa, 2181 Westlawn, Iowa City, IA 52242, USA
Thomas D Brown - Department of Biomedical Engineering, The University of Iowa, 2181 Westlawn, Iowa City, IA 52242, USA
Resource Type: Journal article
Publication Details: Journal of orthopaedic research, Vol.23(3), pp.686-690
Publisher: Elsevier Ltd
DOI: 10.1016/j.orthres.2004.09.008
PMID: 15885492
PMCID: PMC2194755
ISSN: 0736-0266
eISSN: 1554-527X
Language: English
Date published: 2005
Academic Unit: Roy J. Carver Department of Biomedical Engineering; Orthopedics and Rehabilitation; Industrial and Systems Engineering
Record Identifier: 9984040231702771

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