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An in vitro study of ultrasound signal loss across simple fractures in cortical bone mimics and bovine cortical bone samples

An in vitro study of ultrasound signal loss across simple fractures in cortical bone mimics and bovine cortical bone samples
An in vitro study of ultrasound signal loss across simple fractures in cortical bone mimics and bovine cortical bone samples
Measurements have been performed on Sawbones® and bovine cortical bone samples at 200 kHz using an axial transmission technique to investigate the factors that determine how ultrasonic waves propagate across a simulated fracture. The peak amplitude of the first arrival signal (FAS) was studied. Results taken from intact specimens were compared with those produced when a simple transverse fracture was introduced. These fracture simulation experiments were found to be consistent with Finite Difference modelling of the experimental conditions. The peak amplitude showed a characteristic variation across the fracture caused by interference between reradiated and scattered/diffracted waves at the fracture site and a net Fracture Transmission Loss (FTL). For small fracture gaps, the change in amplitude was sensitive to the presence of the fracture. This sensitivity suggests that this parameter could be a good quantitative indicator for the fracture healing process assuming the relative change in this parameter brought about by healing is measurable.
attenuation, axial transmission, fracture healing measurement, tibia
8756-3282
656-661
Dodd, S.P.
b05ffaff-aee8-4252-af30-a19f5f222dc5
Cunningham, J.L.
6253f8e6-f747-44d7-8edb-6b0b22467978
Miles, A.W.
822cf30f-f60e-4d63-954b-765eea09b184
Gheduzzi, S.
20fa7aa8-cc04-411d-b569-37e405132d10
Humphrey, V.F.
23c9bd0c-7870-428f-b0dd-5ff158d22590
Dodd, S.P.
b05ffaff-aee8-4252-af30-a19f5f222dc5
Cunningham, J.L.
6253f8e6-f747-44d7-8edb-6b0b22467978
Miles, A.W.
822cf30f-f60e-4d63-954b-765eea09b184
Gheduzzi, S.
20fa7aa8-cc04-411d-b569-37e405132d10
Humphrey, V.F.
23c9bd0c-7870-428f-b0dd-5ff158d22590

Dodd, S.P., Cunningham, J.L., Miles, A.W., Gheduzzi, S. and Humphrey, V.F. (2007) An in vitro study of ultrasound signal loss across simple fractures in cortical bone mimics and bovine cortical bone samples. Bone, 40 (3), 656-661. (doi:10.1016/j.bone.2006.10.004).

Record type: Article

Abstract

Measurements have been performed on Sawbones® and bovine cortical bone samples at 200 kHz using an axial transmission technique to investigate the factors that determine how ultrasonic waves propagate across a simulated fracture. The peak amplitude of the first arrival signal (FAS) was studied. Results taken from intact specimens were compared with those produced when a simple transverse fracture was introduced. These fracture simulation experiments were found to be consistent with Finite Difference modelling of the experimental conditions. The peak amplitude showed a characteristic variation across the fracture caused by interference between reradiated and scattered/diffracted waves at the fracture site and a net Fracture Transmission Loss (FTL). For small fracture gaps, the change in amplitude was sensitive to the presence of the fracture. This sensitivity suggests that this parameter could be a good quantitative indicator for the fracture healing process assuming the relative change in this parameter brought about by healing is measurable.

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More information

Published date: March 2007
Keywords: attenuation, axial transmission, fracture healing measurement, tibia

Identifiers

Local EPrints ID: 43403
URI: https://eprints.soton.ac.uk/id/eprint/43403
ISSN: 8756-3282
PURE UUID: 130b724d-c9db-402a-8bfd-5b5f075caa58
ORCID for V.F. Humphrey: ORCID iD orcid.org/0000-0002-3580-5373

Catalogue record

Date deposited: 24 Jan 2007
Last modified: 14 Mar 2019 01:44

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