Journal
JOURNAL OF ORTHOPAEDIC RESEARCH
Volume 23, Issue 3, Pages 686-690Publisher
WILEY
DOI: 10.1016/j.orthres.2004.09.008
Keywords
fracture energy; bone; comminution; injury severity
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Funding
- NIAMS NIH HHS [P50 AR048939-010001, P50 AR048939, R01 AR046601, R24 AR046601-01, R24 AR046601, P50 AR048939-01, P50 AR048939-019002] Funding Source: Medline
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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 oil 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 front 0.423 to 0.702 J/g. Local material propel-ties were also incorporated into these measurements via CT Hounsfield intensities. This study confirms that comminution severity of bone fractures can indeed be measured oil a Continuous scale, based oil energy absorption. This lays a foundation for similar assessments in human injuries. (c) 2004 Orthopaedic Research Society. Published by Elsevier Ltd. All rights reserved.
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