Survival of primary ankle replacements: data from global joint registries
Survival of primary ankle replacements: data from global joint registries
Background: Ankle arthroplasty, commonly known as ankle replacement, is a surgical procedure for treating end-stage ankle osteoarthritis. Whilst evidence shows good clinical results after surgery, little is known of the long-term survival of ankle replacements and the need for ankle revision. Using more recent implant data and long-term data, there is now opportunity to examine at a population-level the survival rate for ankle implants, to examine between-country differences in ankle revision surgery, and to compare temporal trends in revision rates between countries. Methods: Four national joint registries from Australia, New Zealand, Norway and Sweden provided the necessary data on revision outcome following primary ankle replacement, for various periods of observation – the earliest starting in 1993 up to the end of 2019. Data were either acquired from published, online annual reports or were provided from direct contact with the joint registries. The key information extracted were Kaplan-Meier estimates to plot survival probability curves following primary ankle replacement. Results: The survival rates varied between countries. At 2 years, across all registries, survival rates all exceeded 0.9 (range 0.91 to 0.97). The variation widened at 5 years (range 0.80 to 0.91), at 10 years (range 0.66 to 0.84) and further at 15-years follow-up (0.56 to 0.78). At each time point, implant survival was greater in Australia and New Zealand with lower rates in Sweden and Norway. Conclusions: We observed variation in primary ankle replacement survival rates across these national registries, although even after 5 years, these population derived data show an 80% revision free survival. These data raise a number of hypotheses concerning the reasons for between-country differences in revision-free survival which will require access to primary data for analysis.
Ankle, Annual, Incidence, Registries, Revision, Survival
Perry, Thomas A.
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Silman, Alan
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Culliford, David
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Gates, Lucy
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Arden, Nigel
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Bowen, Catherine
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Harris, Ian A.
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Dyer, Chelsea Nicole
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Beischer, Andrew
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Ackerman, Ilana
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Furnes, Ove
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Hallan, Geir
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Mäkelä, Keijo T.
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Stenholm, Miika
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Henricson, Anders
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Mckie, John
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Muir, Dawson
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7 May 2022
Perry, Thomas A.
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Silman, Alan
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Culliford, David
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Gates, Lucy
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Arden, Nigel
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Bowen, Catherine
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Harris, Ian A.
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Dyer, Chelsea Nicole
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Beischer, Andrew
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Ackerman, Ilana
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Furnes, Ove
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Hallan, Geir
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Mäkelä, Keijo T.
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Stenholm, Miika
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Henricson, Anders
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Mckie, John
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Muir, Dawson
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Perry, Thomas A., Silman, Alan, Culliford, David, Gates, Lucy, Arden, Nigel, Bowen, Catherine, Harris, Ian A., Dyer, Chelsea Nicole, Beischer, Andrew, Ackerman, Ilana, Furnes, Ove, Hallan, Geir, Mäkelä, Keijo T., Stenholm, Miika, Henricson, Anders, Mckie, John and Muir, Dawson
(2022)
Survival of primary ankle replacements: data from global joint registries.
Journal of Foot and Ankle Research, 15 (1), [33].
(doi:10.1186/s13047-022-00539-2).
Abstract
Background: Ankle arthroplasty, commonly known as ankle replacement, is a surgical procedure for treating end-stage ankle osteoarthritis. Whilst evidence shows good clinical results after surgery, little is known of the long-term survival of ankle replacements and the need for ankle revision. Using more recent implant data and long-term data, there is now opportunity to examine at a population-level the survival rate for ankle implants, to examine between-country differences in ankle revision surgery, and to compare temporal trends in revision rates between countries. Methods: Four national joint registries from Australia, New Zealand, Norway and Sweden provided the necessary data on revision outcome following primary ankle replacement, for various periods of observation – the earliest starting in 1993 up to the end of 2019. Data were either acquired from published, online annual reports or were provided from direct contact with the joint registries. The key information extracted were Kaplan-Meier estimates to plot survival probability curves following primary ankle replacement. Results: The survival rates varied between countries. At 2 years, across all registries, survival rates all exceeded 0.9 (range 0.91 to 0.97). The variation widened at 5 years (range 0.80 to 0.91), at 10 years (range 0.66 to 0.84) and further at 15-years follow-up (0.56 to 0.78). At each time point, implant survival was greater in Australia and New Zealand with lower rates in Sweden and Norway. Conclusions: We observed variation in primary ankle replacement survival rates across these national registries, although even after 5 years, these population derived data show an 80% revision free survival. These data raise a number of hypotheses concerning the reasons for between-country differences in revision-free survival which will require access to primary data for analysis.
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Survival of Primary Ankle Replacements_final_TP(29-09-21)_final(tracked)...
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s13047-022-00539-2
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Accepted/In Press date: 13 April 2022
Published date: 7 May 2022
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© 2022. The Author(s).
Keywords:
Ankle, Annual, Incidence, Registries, Revision, Survival
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Local EPrints ID: 468053
URI: http://eprints.soton.ac.uk/id/eprint/468053
ISSN: 1757-1146
PURE UUID: ae43de2f-8558-42e1-8ba9-43dde8eed654
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Date deposited: 28 Jul 2022 18:55
Last modified: 17 Mar 2024 03:22
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Contributors
Author:
Thomas A. Perry
Author:
Alan Silman
Author:
David Culliford
Author:
Ian A. Harris
Author:
Chelsea Nicole Dyer
Author:
Andrew Beischer
Author:
Ilana Ackerman
Author:
Ove Furnes
Author:
Geir Hallan
Author:
Keijo T. Mäkelä
Author:
Miika Stenholm
Author:
Anders Henricson
Author:
John Mckie
Author:
Dawson Muir
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