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A randomised RSA study of Peri-Apatitetrade mark HA coating of a total knee prosthesis.

Hansson, Ulrik LU ; Ryd, Leif LU and Toksvig-Larsen, Sören LU (2008) In Knee 15. p.211-216
Abstract
BACKGROUND: In total knee replacement, sound early fixation of the prosthesis is crucial for achieving a good long-term result and for minimising the risk of loosening. Various types of prosthetic material, different surface textures and shapes and the incorporation of screws or pegs have been used to achieve good fixation, particularly in the uncemented knee. Hydroxyapatite (HA) coating of prosthetic joint components is another technique used to enhance early stability and so to improve the longevity of the prosthesis-bone fixation. HA ceramic coatings are mostly plasma sprayed onto the fixation surface of the implant. Plasma spraying is largely a 'line of sight' technique and as such there are difficulties involved when covering... (More)
BACKGROUND: In total knee replacement, sound early fixation of the prosthesis is crucial for achieving a good long-term result and for minimising the risk of loosening. Various types of prosthetic material, different surface textures and shapes and the incorporation of screws or pegs have been used to achieve good fixation, particularly in the uncemented knee. Hydroxyapatite (HA) coating of prosthetic joint components is another technique used to enhance early stability and so to improve the longevity of the prosthesis-bone fixation. HA ceramic coatings are mostly plasma sprayed onto the fixation surface of the implant. Plasma spraying is largely a 'line of sight' technique and as such there are difficulties involved when covering three-dimensional planes, such as porous beaded fixation surfaces typically found on several knee prostheses. The objective of this study was to assess the clinical performance of the solution-deposited HA coating, Peri-Apatitetrade mark , with regard to its ability to stimulate an endurable and stable implant fixation. PATIENTS AND METHODS: We randomised 60 patients into two groups; one group received the porous coated prosthesis with solution-deposited HA, and the other group received a prosthesis without HA. Radiostereometric examination was used as the primary tool for measuring migration in the prosthetic components. RESULTS: There was a lower incidence of early subsidence in the Peri-Apatitetrade mark group. At 24 months there were no differences in clinical scorings or maximal total point motion. CONCLUSION: Addition of solution-deposited HA coating appears to provide better early stable fixation in a porous coated knee prosthesis. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Knee
volume
15
pages
211 - 216
publisher
Elsevier
external identifiers
  • pmid:18329882
  • wos:000256749100012
  • scopus:42749089229
ISSN
1873-5800
DOI
10.1016/j.knee.2008.01.013
language
English
LU publication?
yes
id
1aaa7b7b-a595-486b-be71-7dbc1564d2b8 (old id 1052703)
alternative location
http://www.ncbi.nlm.nih.gov/pubmed/18329882?dopt=Abstract
date added to LUP
2008-04-01 12:59:23
date last changed
2017-09-03 04:47:10
@article{1aaa7b7b-a595-486b-be71-7dbc1564d2b8,
  abstract     = {BACKGROUND: In total knee replacement, sound early fixation of the prosthesis is crucial for achieving a good long-term result and for minimising the risk of loosening. Various types of prosthetic material, different surface textures and shapes and the incorporation of screws or pegs have been used to achieve good fixation, particularly in the uncemented knee. Hydroxyapatite (HA) coating of prosthetic joint components is another technique used to enhance early stability and so to improve the longevity of the prosthesis-bone fixation. HA ceramic coatings are mostly plasma sprayed onto the fixation surface of the implant. Plasma spraying is largely a 'line of sight' technique and as such there are difficulties involved when covering three-dimensional planes, such as porous beaded fixation surfaces typically found on several knee prostheses. The objective of this study was to assess the clinical performance of the solution-deposited HA coating, Peri-Apatitetrade mark , with regard to its ability to stimulate an endurable and stable implant fixation. PATIENTS AND METHODS: We randomised 60 patients into two groups; one group received the porous coated prosthesis with solution-deposited HA, and the other group received a prosthesis without HA. Radiostereometric examination was used as the primary tool for measuring migration in the prosthetic components. RESULTS: There was a lower incidence of early subsidence in the Peri-Apatitetrade mark group. At 24 months there were no differences in clinical scorings or maximal total point motion. CONCLUSION: Addition of solution-deposited HA coating appears to provide better early stable fixation in a porous coated knee prosthesis.},
  author       = {Hansson, Ulrik and Ryd, Leif and Toksvig-Larsen, Sören},
  issn         = {1873-5800},
  language     = {eng},
  pages        = {211--216},
  publisher    = {Elsevier},
  series       = {Knee},
  title        = {A randomised RSA study of Peri-Apatitetrade mark HA coating of a total knee prosthesis.},
  url          = {http://dx.doi.org/10.1016/j.knee.2008.01.013},
  volume       = {15},
  year         = {2008},
}