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Injectable calcium ...
Injectable calcium phosphate cement for augmentation around cancellous bone screws : In vivo biomechanical studies
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- Larsson, Sune (author)
- Uppsala universitet,Ortopedi
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Stadelmann, V. A. (author)
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- Arnoldi, J. (author)
- Gothenburg University,Göteborgs universitet,Institutionen för kliniska vetenskaper, Avdelningen för biomaterialvetenskap,Institute of Clinical Sciences, Department of Biomaterials
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Behrens, M. (author)
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Hess, B. (author)
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Procter, P. (author)
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Murphy, M. (author)
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Pioletti, D. P. (author)
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(creator_code:org_t)
- Elsevier BV, 2012
- 2012
- English.
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In: Journal of Biomechanics. - : Elsevier BV. - 0021-9290 .- 1873-2380. ; 45:7, s. 1156-1160
- Related links:
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https://infoscience....
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://gup.ub.gu.se...
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Abstract
Subject headings
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- In lower cancellous apparent bone density, it can be difficult to achieve adequate screw fixation and hence stable fracture fixation. Different strategies have been proposed, one of them is through augmentation using calcium phosphate cement in the region at or close to the screw thread itself. To support the hypothesis of an improved screw fixation technique by augmentation of the bone surrounding the implanted screw, in vivo biomechanical and densitometric studies are performed on rabbit specimen where normal and simulated weak bone quality are considered. In particular, the evolution of screw stability till 12 weeks following the implantation is quantified. A statistical significance in the pull out force for augmented versus non-augmented screws was found for the shorter time periods tested of <= 5 days whilst the pull out force was found to increase with time for both augmented and non-augmented screws during the 12 week course of the study. The results of the study demonstrate that the use of an injectable calcium phosphate cement which sets in vivo can significantly improve screw pull out strength at and after implantation for normal and simulated weak bone quality.
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine (hsv//eng)
Keyword
- Cancellous bone screw
- Augmentation
- Calcium phosphate cement
- Pull out
- In vivo testing
- Cancellous bone screw; Augmentation; Calcium phosphate cement; Pull out; In vivo testing
Publication and Content Type
- ref (subject category)
- art (subject category)
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