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Plasma processing for inducing bioactivity in stainless steel orthopaedic screws

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Title: Plasma processing for inducing bioactivity in stainless steel orthopaedic screws
Authors: Kumar, Sunil1 sunil.kumar@unisa.edu.au, Simpson, Darren2, Smart, Roger St.C.2
Source: Surface & Coatings Technology. Dec2007, Vol. 202 Issue 4-7, p1242-1246. 5p.
Subjects: Stainless steel, Hydroxyapatite, Surface coatings, Alloys, Corrosion resistant materials
Abstract: Abstract: The work presented in this paper is centred on applying plasma processing for inducing bioactivity (ability of a material to bond with bone) in otherwise bioinert stainless steel screws commonly used in orthopaedic surgery. As-received cortical stainless steel screws were hydroxylated using a patented two-step plasma process developed by the authors. The bioactivity of the screws thus processed was investigated in vitro by treating them with simulated body fluid (SBF). The SBF treatment resulted in a thin, continuous surface layer of hydroxyapatite (HA, calcium hydroxy phosphate) on the screws, thus confirming their bioactivity. The plasma processed screws were also compared with wet chemically processed screws for the growth of HA from SBF, and it was found that the HA layer on the plasma processed screws exhibited higher (complete) substrate coverage. The realisation of bioactive screws, in particular fine-threaded stainless steel screws, offers a major advancement towards the fixation of both internal and external orthopaedic implants. [Copyright &y& Elsevier]
Copyright of Surface & Coatings Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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Header DbId: egs
DbLabel: Engineering Source
An: 27444599
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Label: Title
  Group: Ti
  Data: Plasma processing for inducing bioactivity in stainless steel orthopaedic screws
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  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Kumar%2C+Sunil%22">Kumar, Sunil</searchLink><relatesTo>1</relatesTo><i> sunil.kumar@unisa.edu.au</i><br /><searchLink fieldCode="AR" term="%22Simpson%2C+Darren%22">Simpson, Darren</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Smart%2C+Roger+St%2EC%2E%22">Smart, Roger St.C.</searchLink><relatesTo>2</relatesTo>
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  Data: <searchLink fieldCode="JN" term="%22Surface+%26+Coatings+Technology%22">Surface & Coatings Technology</searchLink>. Dec2007, Vol. 202 Issue 4-7, p1242-1246. 5p.
– Name: Subject
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  Data: <searchLink fieldCode="DE" term="%22Stainless+steel%22">Stainless steel</searchLink><br /><searchLink fieldCode="DE" term="%22Hydroxyapatite%22">Hydroxyapatite</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+coatings%22">Surface coatings</searchLink><br /><searchLink fieldCode="DE" term="%22Alloys%22">Alloys</searchLink><br /><searchLink fieldCode="DE" term="%22Corrosion+resistant+materials%22">Corrosion resistant materials</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Abstract: The work presented in this paper is centred on applying plasma processing for inducing bioactivity (ability of a material to bond with bone) in otherwise bioinert stainless steel screws commonly used in orthopaedic surgery. As-received cortical stainless steel screws were hydroxylated using a patented two-step plasma process developed by the authors. The bioactivity of the screws thus processed was investigated in vitro by treating them with simulated body fluid (SBF). The SBF treatment resulted in a thin, continuous surface layer of hydroxyapatite (HA, calcium hydroxy phosphate) on the screws, thus confirming their bioactivity. The plasma processed screws were also compared with wet chemically processed screws for the growth of HA from SBF, and it was found that the HA layer on the plasma processed screws exhibited higher (complete) substrate coverage. The realisation of bioactive screws, in particular fine-threaded stainless steel screws, offers a major advancement towards the fixation of both internal and external orthopaedic implants. [Copyright &y& Elsevier]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Surface & Coatings Technology is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
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      – Type: doi
        Value: 10.1016/j.surfcoat.2007.07.075
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      – Code: eng
        Text: English
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        PageCount: 5
        StartPage: 1242
    Subjects:
      – SubjectFull: Stainless steel
        Type: general
      – SubjectFull: Hydroxyapatite
        Type: general
      – SubjectFull: Surface coatings
        Type: general
      – SubjectFull: Alloys
        Type: general
      – SubjectFull: Corrosion resistant materials
        Type: general
    Titles:
      – TitleFull: Plasma processing for inducing bioactivity in stainless steel orthopaedic screws
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            NameFull: Kumar, Sunil
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            NameFull: Simpson, Darren
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              Text: Dec2007
              Type: published
              Y: 2007
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