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Posterior-stabilized total knee arthroplasty: a matched pair analysis of a classic and its evolutional design
BACKGROUND: Total knee arthroplasty (TKA) designs continue to be modified to optimize patient's outcome. This study was designed to compare clinical and radiological results of classic worldwide used TKA posterior-stabilized (PS) design to those of its recent evolution. METHODS: A consecutive g...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Elsevier
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5247512/ https://www.ncbi.nlm.nih.gov/pubmed/28326427 http://dx.doi.org/10.1016/j.artd.2016.05.002 |
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author | Indelli, Pier Francesco Pipino, Gennaro Johnson, Paul Graceffa, Angelo Marcucci, Massimiliano |
author_facet | Indelli, Pier Francesco Pipino, Gennaro Johnson, Paul Graceffa, Angelo Marcucci, Massimiliano |
author_sort | Indelli, Pier Francesco |
collection | PubMed |
description | BACKGROUND: Total knee arthroplasty (TKA) designs continue to be modified to optimize patient's outcome. This study was designed to compare clinical and radiological results of classic worldwide used TKA posterior-stabilized (PS) design to those of its recent evolution. METHODS: A consecutive group of 100 patients undergoing TKA using a classic cemented fixed-bearing PS TKA system was matched by age, gender, body max index to 100 patients having the newer cemented fixed-bearing PS design, both by the same manufacturer. Patients were assessed preoperatively, at 12 months and at 24 months minimum follow-up (range, 24-46) in a standard prospective fashion. The outcome assessments used were the Oxford Knee Score, the Knee Society Score, range of motion, and a satisfaction survey. A 2-sample t test comparing the 2 groups was performed. RESULTS: No patients were lost at follow-up. At 2-year follow-up, differences in clinical and radiological Knee Society Score (P = .09), Oxford Score (P = .08), and overall satisfaction rate did not reach statistical significance. Implant group 2 showed a statistically significant decrease in postoperative anterior knee pain (P = .006). At final follow-up, 16% of group 1 knees achieved > 130° flexion compared with 37% in group 2 (P = .0009). There were 2 revisions for any reason in group 1 and none in group 2. CONCLUSIONS: Design modifications applied to the newer TKA system allowed greater flexion and lower patellofemoral complications but did not appear to achieve better overall clinical scores. |
format | Online Article Text |
id | pubmed-5247512 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Elsevier |
record_format | MEDLINE/PubMed |
spelling | pubmed-52475122017-03-21 Posterior-stabilized total knee arthroplasty: a matched pair analysis of a classic and its evolutional design Indelli, Pier Francesco Pipino, Gennaro Johnson, Paul Graceffa, Angelo Marcucci, Massimiliano Arthroplasty Today Original Research BACKGROUND: Total knee arthroplasty (TKA) designs continue to be modified to optimize patient's outcome. This study was designed to compare clinical and radiological results of classic worldwide used TKA posterior-stabilized (PS) design to those of its recent evolution. METHODS: A consecutive group of 100 patients undergoing TKA using a classic cemented fixed-bearing PS TKA system was matched by age, gender, body max index to 100 patients having the newer cemented fixed-bearing PS design, both by the same manufacturer. Patients were assessed preoperatively, at 12 months and at 24 months minimum follow-up (range, 24-46) in a standard prospective fashion. The outcome assessments used were the Oxford Knee Score, the Knee Society Score, range of motion, and a satisfaction survey. A 2-sample t test comparing the 2 groups was performed. RESULTS: No patients were lost at follow-up. At 2-year follow-up, differences in clinical and radiological Knee Society Score (P = .09), Oxford Score (P = .08), and overall satisfaction rate did not reach statistical significance. Implant group 2 showed a statistically significant decrease in postoperative anterior knee pain (P = .006). At final follow-up, 16% of group 1 knees achieved > 130° flexion compared with 37% in group 2 (P = .0009). There were 2 revisions for any reason in group 1 and none in group 2. CONCLUSIONS: Design modifications applied to the newer TKA system allowed greater flexion and lower patellofemoral complications but did not appear to achieve better overall clinical scores. Elsevier 2016-08-21 /pmc/articles/PMC5247512/ /pubmed/28326427 http://dx.doi.org/10.1016/j.artd.2016.05.002 Text en http://creativecommons.org/licenses/by-nc-nd/4.0/ This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/). |
spellingShingle | Original Research Indelli, Pier Francesco Pipino, Gennaro Johnson, Paul Graceffa, Angelo Marcucci, Massimiliano Posterior-stabilized total knee arthroplasty: a matched pair analysis of a classic and its evolutional design |
title | Posterior-stabilized total knee arthroplasty: a matched pair analysis of a classic and its evolutional design |
title_full | Posterior-stabilized total knee arthroplasty: a matched pair analysis of a classic and its evolutional design |
title_fullStr | Posterior-stabilized total knee arthroplasty: a matched pair analysis of a classic and its evolutional design |
title_full_unstemmed | Posterior-stabilized total knee arthroplasty: a matched pair analysis of a classic and its evolutional design |
title_short | Posterior-stabilized total knee arthroplasty: a matched pair analysis of a classic and its evolutional design |
title_sort | posterior-stabilized total knee arthroplasty: a matched pair analysis of a classic and its evolutional design |
topic | Original Research |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5247512/ https://www.ncbi.nlm.nih.gov/pubmed/28326427 http://dx.doi.org/10.1016/j.artd.2016.05.002 |
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