Journal article
High Density Polyetherurethane Foam as a Fragmentation and Radiographic Surrogate for Cortical Bone
The Iowa orthopaedic journal, Vol.20, pp.24-30
2000
PMCID: PMC1888748
PMID: 10934621
Appears in Diamond Open Access
Abstract
Background: Although one of the most important factors in predicting outcome of articular fracture, the comminution of the fracture is only subjectively assessed. To facilitate development of objective, quantitative measures of comminution phenomena, there is need for a bone fragmentation surrogate.
Methods: Laboratory investigation was undertaken to develop and characterize a novel synthetic material capable of emulating the fragmentation and radiographic behavior of human cortical bone.
Result: Screening tests performed with a drop tower apparatus identified high-density polyetherurethane foam as having suitable fragmentation properties. The material's impact behavior and its quasi-static mechanical properties are here described. Dispersal of barium sulfate (BaSO4) in the resin achieved radio-density closely resembling that of bone, without detectably altering mechanical behavior. The surrogate material's ultimate strength, elastic modulus, and quasi-static toughness are within an order of magnitude of those of mammalian cortical bone. The spectrum of comminution patterns produced by this material when impacted with varying amounts of energy is very comparable to the spectrum of bone fragment comminution seen clinically.
Conclusions: A novel high-density polyetherurethane foam, when subjected to impact loading, sustains comminuted fracture in a manner strikingly similar to cortical bone. Moreover, since the material also can be doped with radio-opacifier so as to closely emulate bone's radiographic signature, it opens many new possibilities for CT-based systematic study of comminution phenomena.
Details
- Title: Subtitle
- High Density Polyetherurethane Foam as a Fragmentation and Radiographic Surrogate for Cortical Bone
- Creators
- Christina L BeardsleyAnneliese D HeinerEric A BrandserJ Lawrence MarshThomas D Brown
- Resource Type
- Journal article
- Publication Details
- The Iowa orthopaedic journal, Vol.20, pp.24-30
- Publisher
- Dept. of Orthopaedics, The University of Iowa; United States
- PMID
- 10934621
- PMCID
- PMC1888748
- ISSN
- 1541-5457
- eISSN
- 1555-1377
- Language
- English
- Date published
- 2000
- Academic Unit
- Orthopedics and Rehabilitation
- Record Identifier
- 9984040221502771
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