Failure of dual radius hydroxyapatite-coated acetabular cups
<p>Abstract</p> <p>Introduction</p> <p>Many kind of hydroxyapatite-coated cups were used, with favorable results in short term studies; it was supposed that its use could improve osteointegration of the cup, enhancing thus stability and survivorship. The purpose of this...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
BMC
2008-08-01
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| Series: | Journal of Orthopaedic Surgery and Research |
| Online Access: | http://www.josr-online.com/content/3/1/35 |
| _version_ | 1817995655326466048 |
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| author | Zatti Giovanni Riva Giacomo Molina Mauro D'Angelo Fabio Cherubino Paolo |
| author_facet | Zatti Giovanni Riva Giacomo Molina Mauro D'Angelo Fabio Cherubino Paolo |
| author_sort | Zatti Giovanni |
| collection | DOAJ |
| description | <p>Abstract</p> <p>Introduction</p> <p>Many kind of hydroxyapatite-coated cups were used, with favorable results in short term studies; it was supposed that its use could improve osteointegration of the cup, enhancing thus stability and survivorship. The purpose of this study is to analyze the long term behavior of the hemispheric HA coated, Dual Radius Osteonics cup and to discuss the way of failure through the exam of the revised components and of both periacetabular and osteolysis tissue.</p> <p>Materials and Methods</p> <p>Between 1994 and 1997, at the Department of Orthopedic Sciences of the Insubria University, using the posterolateral approach, were implanted 276 Dual Radius Osteonics<sup>® </sup>in 256 patients, with mean age of 63 years.</p> <p>Results</p> <p>At a mean follow-up of 10 years (range 8–12 years), 183 cups in 165 patients, were available for clinical and radiographical evaluation. 22 Cups among the 183 were revised (11%). The cause of revision was aseptic loosening in 17 cases, septic loosening in one case, periprosthetic fracture in another case, osteolysis and polyethylene wear in two cases and, finally, recurrent dislocations in the last one. In the remaining patients, mean HHS increased from a preoperative value of 50,15 to a postoperative value of 92,69. The mean polyethylene wear was 1,25 mm (min. 0,08, max. 3,9 mm), with a mean annual wear of 0,17 mm. The mean acetabular migration on the two axis was 1,6 mm and 1,8 mm. Peri-acetabular osteolysis were recorded in 89% of the implants (163 cases). The cumulative survivorship (revision as endpoint) at the time was 88,9%.</p> <p>Conclusion</p> <p>Our study confirms the bad behavior of this type of cup probably related to the design, to the method of HA fixation. The observations carried out on the revised cup confirm these hypotheses but did not clarify if the third body wear could be a further problem. Another interesting aspect is the high incidence of osteolysis, which are often asymptomatic becoming a problem for the surgeon as the patient refuses the possibility of a revision.</p> |
| first_indexed | 2024-04-14T02:10:08Z |
| format | Article |
| id | doaj.art-2b8d154778b7403b9499311273dc5c2c |
| institution | Directory Open Access Journal |
| issn | 1749-799X |
| language | English |
| last_indexed | 2024-04-14T02:10:08Z |
| publishDate | 2008-08-01 |
| publisher | BMC |
| record_format | Article |
| series | Journal of Orthopaedic Surgery and Research |
| spelling | doaj.art-2b8d154778b7403b9499311273dc5c2c2022-12-22T02:18:28ZengBMCJournal of Orthopaedic Surgery and Research1749-799X2008-08-01313510.1186/1749-799X-3-35Failure of dual radius hydroxyapatite-coated acetabular cupsZatti GiovanniRiva GiacomoMolina MauroD'Angelo FabioCherubino Paolo<p>Abstract</p> <p>Introduction</p> <p>Many kind of hydroxyapatite-coated cups were used, with favorable results in short term studies; it was supposed that its use could improve osteointegration of the cup, enhancing thus stability and survivorship. The purpose of this study is to analyze the long term behavior of the hemispheric HA coated, Dual Radius Osteonics cup and to discuss the way of failure through the exam of the revised components and of both periacetabular and osteolysis tissue.</p> <p>Materials and Methods</p> <p>Between 1994 and 1997, at the Department of Orthopedic Sciences of the Insubria University, using the posterolateral approach, were implanted 276 Dual Radius Osteonics<sup>® </sup>in 256 patients, with mean age of 63 years.</p> <p>Results</p> <p>At a mean follow-up of 10 years (range 8–12 years), 183 cups in 165 patients, were available for clinical and radiographical evaluation. 22 Cups among the 183 were revised (11%). The cause of revision was aseptic loosening in 17 cases, septic loosening in one case, periprosthetic fracture in another case, osteolysis and polyethylene wear in two cases and, finally, recurrent dislocations in the last one. In the remaining patients, mean HHS increased from a preoperative value of 50,15 to a postoperative value of 92,69. The mean polyethylene wear was 1,25 mm (min. 0,08, max. 3,9 mm), with a mean annual wear of 0,17 mm. The mean acetabular migration on the two axis was 1,6 mm and 1,8 mm. Peri-acetabular osteolysis were recorded in 89% of the implants (163 cases). The cumulative survivorship (revision as endpoint) at the time was 88,9%.</p> <p>Conclusion</p> <p>Our study confirms the bad behavior of this type of cup probably related to the design, to the method of HA fixation. The observations carried out on the revised cup confirm these hypotheses but did not clarify if the third body wear could be a further problem. Another interesting aspect is the high incidence of osteolysis, which are often asymptomatic becoming a problem for the surgeon as the patient refuses the possibility of a revision.</p>http://www.josr-online.com/content/3/1/35 |
| spellingShingle | Zatti Giovanni Riva Giacomo Molina Mauro D'Angelo Fabio Cherubino Paolo Failure of dual radius hydroxyapatite-coated acetabular cups Journal of Orthopaedic Surgery and Research |
| title | Failure of dual radius hydroxyapatite-coated acetabular cups |
| title_full | Failure of dual radius hydroxyapatite-coated acetabular cups |
| title_fullStr | Failure of dual radius hydroxyapatite-coated acetabular cups |
| title_full_unstemmed | Failure of dual radius hydroxyapatite-coated acetabular cups |
| title_short | Failure of dual radius hydroxyapatite-coated acetabular cups |
| title_sort | failure of dual radius hydroxyapatite coated acetabular cups |
| url | http://www.josr-online.com/content/3/1/35 |
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