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Delayed surgery does not reduce the interface strength between the surface of a bone fracture and a self-curing injectable hydroxyapatite (Norian SRS)

Kopylov, Philippe LU ; Tägil, Magnus LU and Aspenberg, Per LU (2001) In Scandinavian Journal of Plastic and Reconstructive Surgery and Hand Surgery1987-01-01+01:002010-01-01+01:00 35(2). p.129-133
Abstract
The shear strength of the interface between bone and an injectable calcium phosphate bone substitute that cures to form a carbonated apatite (Norian SRS) was measured and related to the time that elapsed between injury and surgery. Eleven rabbits had a 3 mm drill hole made in the retropatellar aspect of the distal femur. After one week, the rabbits were reoperated on and the hole filled with Norian SRS after it had been cleaned gently with a sponge. During the same procedure a similar hole was burred in the opposite femur and filled with Norian SRS after a few minutes ("immediate injection"). Four other rabbits had only one side operated on with immediate injection of Norian SRS to compare with the opposite untreated side. The rabbits were... (More)
The shear strength of the interface between bone and an injectable calcium phosphate bone substitute that cures to form a carbonated apatite (Norian SRS) was measured and related to the time that elapsed between injury and surgery. Eleven rabbits had a 3 mm drill hole made in the retropatellar aspect of the distal femur. After one week, the rabbits were reoperated on and the hole filled with Norian SRS after it had been cleaned gently with a sponge. During the same procedure a similar hole was burred in the opposite femur and filled with Norian SRS after a few minutes ("immediate injection"). Four other rabbits had only one side operated on with immediate injection of Norian SRS to compare with the opposite untreated side. The rabbits were killed four days after the injection of Norian SRS. The femurs were prepared and sawed perpendicularly to the burr channels to produce discs 3.5 mm thick. A push out test of the Norian SRS plug within the bone disc was done to measure the force at failure. In the immediately injected specimens the failure occurred at a mean of 28 N (range 5-57) compared with 42 N (range 25-65) in the specimens injected after a one week delay. There was no significant difference between delayed and immediate treatment (95% confidence interval -5 to 133). The histological examination showed that 9 of the 12 specimens had Norian SRS still adherent to half or more of the circumference of the hole. This indicates that the failure occurred in the Norian SRS rather than in the bone or at the interface. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Fracture, Strength, Bone, Hydroxyapatite, Substitute, Radius
in
Scandinavian Journal of Plastic and Reconstructive Surgery and Hand Surgery1987-01-01+01:002010-01-01+01:00
volume
35
issue
2
pages
129 - 133
publisher
Taylor & Francis
external identifiers
  • pmid:11484521
  • scopus:0034953233
ISSN
1651-2073
DOI
10.1080/028443101300165255
language
English
LU publication?
yes
id
b10c3a69-22d8-4830-87af-7737c4b4c886 (old id 1121335)
date added to LUP
2008-07-01 14:47:00
date last changed
2018-05-29 12:30:45
@article{b10c3a69-22d8-4830-87af-7737c4b4c886,
  abstract     = {The shear strength of the interface between bone and an injectable calcium phosphate bone substitute that cures to form a carbonated apatite (Norian SRS) was measured and related to the time that elapsed between injury and surgery. Eleven rabbits had a 3 mm drill hole made in the retropatellar aspect of the distal femur. After one week, the rabbits were reoperated on and the hole filled with Norian SRS after it had been cleaned gently with a sponge. During the same procedure a similar hole was burred in the opposite femur and filled with Norian SRS after a few minutes ("immediate injection"). Four other rabbits had only one side operated on with immediate injection of Norian SRS to compare with the opposite untreated side. The rabbits were killed four days after the injection of Norian SRS. The femurs were prepared and sawed perpendicularly to the burr channels to produce discs 3.5 mm thick. A push out test of the Norian SRS plug within the bone disc was done to measure the force at failure. In the immediately injected specimens the failure occurred at a mean of 28 N (range 5-57) compared with 42 N (range 25-65) in the specimens injected after a one week delay. There was no significant difference between delayed and immediate treatment (95% confidence interval -5 to 133). The histological examination showed that 9 of the 12 specimens had Norian SRS still adherent to half or more of the circumference of the hole. This indicates that the failure occurred in the Norian SRS rather than in the bone or at the interface.},
  author       = {Kopylov, Philippe and Tägil, Magnus and Aspenberg, Per},
  issn         = {1651-2073},
  keyword      = {Fracture,Strength,Bone,Hydroxyapatite,Substitute,Radius},
  language     = {eng},
  number       = {2},
  pages        = {129--133},
  publisher    = {Taylor & Francis},
  series       = {Scandinavian Journal of Plastic and Reconstructive Surgery and Hand Surgery1987-01-01+01:002010-01-01+01:00},
  title        = {Delayed surgery does not reduce the interface strength between the surface of a bone fracture and a self-curing injectable hydroxyapatite (Norian SRS)},
  url          = {http://dx.doi.org/10.1080/028443101300165255},
  volume       = {35},
  year         = {2001},
}