Retrieval study on hydroxyapatite-coated acetabular cups

W. P. Hu, K. A. Lai, C. H. Lin, C. Y. Yang, G. L. Chang

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Objective. A large scaled retrieved study of failed HA-coated acetabular cup was done by identifying and quantifying residual HA area on the surface of the retrieved cup for understanding the relevance between HA absorption and failure modes. Design. A total of 49 retrieved acetabular cups were collected through a long period of time for the study. Two main groups among the 49 cups were Landos and Osteonics cups. Methods. Image processing techniques and mathematical operation methods were used to quantify the residual HA area on the retrieved cups. Data incorporated with patients' histories and residual HA area for statistical analysis. Results. The HA coated surface of Landos cup disappears at a rate of 15.14% and 8.8% of the total surface per year for he unstable and the stable cups, respectively. The average loss rate of the HA coating of Osteonics cup in unstable cases is also faster than that in stable cases. Conclusions. The HA coating disappeared significant slower on the stable cups than did the unstable cups. The strong effect of mechanical fixation is necessary to achieve well biological fixation result.

Original languageEnglish
Pages (from-to)5-6
Number of pages2
JournalBioengineering, Proceedings of the Northeast Conference
DOIs
Publication statusPublished - 2002 Jan 1

Fingerprint

Durapatite
Hydroxyapatite
Coatings
Failure modes
Statistical methods
Image processing

All Science Journal Classification (ASJC) codes

  • Bioengineering

Cite this

@article{2eea79cea27f435597f1b0134f884c1b,
title = "Retrieval study on hydroxyapatite-coated acetabular cups",
abstract = "Objective. A large scaled retrieved study of failed HA-coated acetabular cup was done by identifying and quantifying residual HA area on the surface of the retrieved cup for understanding the relevance between HA absorption and failure modes. Design. A total of 49 retrieved acetabular cups were collected through a long period of time for the study. Two main groups among the 49 cups were Landos and Osteonics cups. Methods. Image processing techniques and mathematical operation methods were used to quantify the residual HA area on the retrieved cups. Data incorporated with patients' histories and residual HA area for statistical analysis. Results. The HA coated surface of Landos cup disappears at a rate of 15.14{\%} and 8.8{\%} of the total surface per year for he unstable and the stable cups, respectively. The average loss rate of the HA coating of Osteonics cup in unstable cases is also faster than that in stable cases. Conclusions. The HA coating disappeared significant slower on the stable cups than did the unstable cups. The strong effect of mechanical fixation is necessary to achieve well biological fixation result.",
author = "Hu, {W. P.} and Lai, {K. A.} and Lin, {C. H.} and Yang, {C. Y.} and Chang, {G. L.}",
year = "2002",
month = "1",
day = "1",
doi = "10.1109/NEBC.2002.999437",
language = "English",
pages = "5--6",
journal = "Bioengineering, Proceedings of the Northeast Conference",
issn = "1071-121X",
publisher = "Institute of Electrical and Electronics Engineers Inc.",

}

Retrieval study on hydroxyapatite-coated acetabular cups. / Hu, W. P.; Lai, K. A.; Lin, C. H.; Yang, C. Y.; Chang, G. L.

In: Bioengineering, Proceedings of the Northeast Conference, 01.01.2002, p. 5-6.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Retrieval study on hydroxyapatite-coated acetabular cups

AU - Hu, W. P.

AU - Lai, K. A.

AU - Lin, C. H.

AU - Yang, C. Y.

AU - Chang, G. L.

PY - 2002/1/1

Y1 - 2002/1/1

N2 - Objective. A large scaled retrieved study of failed HA-coated acetabular cup was done by identifying and quantifying residual HA area on the surface of the retrieved cup for understanding the relevance between HA absorption and failure modes. Design. A total of 49 retrieved acetabular cups were collected through a long period of time for the study. Two main groups among the 49 cups were Landos and Osteonics cups. Methods. Image processing techniques and mathematical operation methods were used to quantify the residual HA area on the retrieved cups. Data incorporated with patients' histories and residual HA area for statistical analysis. Results. The HA coated surface of Landos cup disappears at a rate of 15.14% and 8.8% of the total surface per year for he unstable and the stable cups, respectively. The average loss rate of the HA coating of Osteonics cup in unstable cases is also faster than that in stable cases. Conclusions. The HA coating disappeared significant slower on the stable cups than did the unstable cups. The strong effect of mechanical fixation is necessary to achieve well biological fixation result.

AB - Objective. A large scaled retrieved study of failed HA-coated acetabular cup was done by identifying and quantifying residual HA area on the surface of the retrieved cup for understanding the relevance between HA absorption and failure modes. Design. A total of 49 retrieved acetabular cups were collected through a long period of time for the study. Two main groups among the 49 cups were Landos and Osteonics cups. Methods. Image processing techniques and mathematical operation methods were used to quantify the residual HA area on the retrieved cups. Data incorporated with patients' histories and residual HA area for statistical analysis. Results. The HA coated surface of Landos cup disappears at a rate of 15.14% and 8.8% of the total surface per year for he unstable and the stable cups, respectively. The average loss rate of the HA coating of Osteonics cup in unstable cases is also faster than that in stable cases. Conclusions. The HA coating disappeared significant slower on the stable cups than did the unstable cups. The strong effect of mechanical fixation is necessary to achieve well biological fixation result.

UR - http://www.scopus.com/inward/record.url?scp=0036075005&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036075005&partnerID=8YFLogxK

U2 - 10.1109/NEBC.2002.999437

DO - 10.1109/NEBC.2002.999437

M3 - Article

AN - SCOPUS:0036075005

SP - 5

EP - 6

JO - Bioengineering, Proceedings of the Northeast Conference

JF - Bioengineering, Proceedings of the Northeast Conference

SN - 1071-121X

ER -