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Retention of the posterior cruciate ligament does not affect femoral rotational alignment in TKA using a gap-balance technique
PURPOSE: Previous studies have evaluated the ability of the gap technique to achieve accurate rotational placement in both posterior cruciate ligament (PCL)-retaining and PCL-substituting total knee arthroplasty (TKA). The purpose of the present study was to determine (1) the accuracy of this techni...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer Berlin Heidelberg
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4237913/ https://www.ncbi.nlm.nih.gov/pubmed/25119053 http://dx.doi.org/10.1007/s00167-014-3218-8 |
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author | Ishii, Yoshinori Noguchi, Hideo Sato, Junko Todoroki, Koji Toyabe, Shin-ichi |
author_facet | Ishii, Yoshinori Noguchi, Hideo Sato, Junko Todoroki, Koji Toyabe, Shin-ichi |
author_sort | Ishii, Yoshinori |
collection | PubMed |
description | PURPOSE: Previous studies have evaluated the ability of the gap technique to achieve accurate rotational placement in both posterior cruciate ligament (PCL)-retaining and PCL-substituting total knee arthroplasty (TKA). The purpose of the present study was to determine (1) the accuracy of this technique in degrees and (2) whether retention of the PCL affects the rotational alignment of the femoral component relative to the transepicondylar axis during TKA. The hypothesis of this study was that retention of the PCL does not affect the femoral rotational alignment in TKA using a gap-balancing technique because both procedures are reported to have good long-term clinical outcomes. METHODS: The femoral rotation angle (FRA) relative to the transepicondylar axis was examined in 206 patients who underwent primary TKA using either PCL-retaining (104 knees) or PCL-substituting (102 knees) prostheses to determine the effect of PCL retention on FRA. Quantitative three-dimensional computed tomography was used to assess the FRA in both groups. All values are expressed as median (25th percentile, 75th percentile). RESULTS: Postoperative FRA in the PCL-retaining group was −1.1° (−2.8°, 2.2°) and in the PCL-substituting group was −0.1° (−2.5°, 2.8°). The groups were not statistically different. One outlier was found in the PCL-retaining group, and none was found in the PCL-substituting group. CONCLUSIONS: The gap technique reliably allows accurate rotational alignment of the femoral component during TKA despite the retention of the PCL. LEVEL OF EVIDENCE: Therapeutic study, Level II. |
format | Online Article Text |
id | pubmed-4237913 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | Springer Berlin Heidelberg |
record_format | MEDLINE/PubMed |
spelling | pubmed-42379132014-11-21 Retention of the posterior cruciate ligament does not affect femoral rotational alignment in TKA using a gap-balance technique Ishii, Yoshinori Noguchi, Hideo Sato, Junko Todoroki, Koji Toyabe, Shin-ichi Knee Surg Sports Traumatol Arthrosc Knee PURPOSE: Previous studies have evaluated the ability of the gap technique to achieve accurate rotational placement in both posterior cruciate ligament (PCL)-retaining and PCL-substituting total knee arthroplasty (TKA). The purpose of the present study was to determine (1) the accuracy of this technique in degrees and (2) whether retention of the PCL affects the rotational alignment of the femoral component relative to the transepicondylar axis during TKA. The hypothesis of this study was that retention of the PCL does not affect the femoral rotational alignment in TKA using a gap-balancing technique because both procedures are reported to have good long-term clinical outcomes. METHODS: The femoral rotation angle (FRA) relative to the transepicondylar axis was examined in 206 patients who underwent primary TKA using either PCL-retaining (104 knees) or PCL-substituting (102 knees) prostheses to determine the effect of PCL retention on FRA. Quantitative three-dimensional computed tomography was used to assess the FRA in both groups. All values are expressed as median (25th percentile, 75th percentile). RESULTS: Postoperative FRA in the PCL-retaining group was −1.1° (−2.8°, 2.2°) and in the PCL-substituting group was −0.1° (−2.5°, 2.8°). The groups were not statistically different. One outlier was found in the PCL-retaining group, and none was found in the PCL-substituting group. CONCLUSIONS: The gap technique reliably allows accurate rotational alignment of the femoral component during TKA despite the retention of the PCL. LEVEL OF EVIDENCE: Therapeutic study, Level II. Springer Berlin Heidelberg 2014-08-14 2014 /pmc/articles/PMC4237913/ /pubmed/25119053 http://dx.doi.org/10.1007/s00167-014-3218-8 Text en © The Author(s) 2014 https://creativecommons.org/licenses/by/4.0/ Open AccessThis article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution, and reproduction in any medium, provided the original author(s) and the source are credited. |
spellingShingle | Knee Ishii, Yoshinori Noguchi, Hideo Sato, Junko Todoroki, Koji Toyabe, Shin-ichi Retention of the posterior cruciate ligament does not affect femoral rotational alignment in TKA using a gap-balance technique |
title | Retention of the posterior cruciate ligament does not affect femoral rotational alignment in TKA using a gap-balance technique |
title_full | Retention of the posterior cruciate ligament does not affect femoral rotational alignment in TKA using a gap-balance technique |
title_fullStr | Retention of the posterior cruciate ligament does not affect femoral rotational alignment in TKA using a gap-balance technique |
title_full_unstemmed | Retention of the posterior cruciate ligament does not affect femoral rotational alignment in TKA using a gap-balance technique |
title_short | Retention of the posterior cruciate ligament does not affect femoral rotational alignment in TKA using a gap-balance technique |
title_sort | retention of the posterior cruciate ligament does not affect femoral rotational alignment in tka using a gap-balance technique |
topic | Knee |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4237913/ https://www.ncbi.nlm.nih.gov/pubmed/25119053 http://dx.doi.org/10.1007/s00167-014-3218-8 |
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