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Effects of posterior condylar osteophytes on gap balancing in computer-assisted total knee arthroplasty with posterior cruciate ligament sacrifice

OBJECTIVE: Gap planning in navigated total knee arthroplasty (TKA) is a critical concern. Osteophytes are normally removed prior to gap planning, with the exception of posterior condylar osteophytes of the femur, which are removed after posterior condylar resection. This study investigated how poste...

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Autores principales: Sriphirom, Pornpavit, Siramanakul, Chaiyaporn, Chanopas, Boonyawat, Boonruksa, Sirisuk
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Paris 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5906486/
https://www.ncbi.nlm.nih.gov/pubmed/29302780
http://dx.doi.org/10.1007/s00590-017-2118-2
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author Sriphirom, Pornpavit
Siramanakul, Chaiyaporn
Chanopas, Boonyawat
Boonruksa, Sirisuk
author_facet Sriphirom, Pornpavit
Siramanakul, Chaiyaporn
Chanopas, Boonyawat
Boonruksa, Sirisuk
author_sort Sriphirom, Pornpavit
collection PubMed
description OBJECTIVE: Gap planning in navigated total knee arthroplasty (TKA) is a critical concern. Osteophytes are normally removed prior to gap planning, with the exception of posterior condylar osteophytes of the femur, which are removed after posterior condylar resection. This study investigated how posterior condylar osteophytes affect gap balancing during surgery. METHODS: This prospective study was conducted on 40 primary varus osteoarthritic knees with a posterior condylar osteophyte that underwent TKA navigation. For all knees, computed tomography (CT) was performed to evaluate osteophyte position. The extension gap and flexion gap were determined under navigation using a tension device with a distraction force of 44 lb. The extension gap and flexion gap were measured before and after osteophyte removal. RESULTS: This study revealed that the average osteophyte thickness after removal was 7.75 ± 5.34 mm. The average extension gap change was 0.64 ± 0.80 mm, and the average flexion gap change was 0.85 ± 1.12 mm. With respect to increases in the medial extension gap, lateral extension gap, medial flexion gap and lateral flexion gap, the average effects of posterior condylar osteophyte removal were 0.74 ± 0.81 mm, 0.53 ± 0.96 mm, 0.71 ± 0.97 mm and 1.00 ± 1.41 mm, respectively. Posterior condylar osteophyte thickness was also significantly associated with increases in the lateral extension gap (R(2) = 0.107, p = 0.03), medial flexion gap (R(2) = 0.101, p = 0.04) and lateral flexion gap (R(2) = 0.107, p = 0.04). CONCLUSION: These results indicated that posterior condylar osteophytes of the femur affect gap balancing during TKA navigation.
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spelling pubmed-59064862018-04-20 Effects of posterior condylar osteophytes on gap balancing in computer-assisted total knee arthroplasty with posterior cruciate ligament sacrifice Sriphirom, Pornpavit Siramanakul, Chaiyaporn Chanopas, Boonyawat Boonruksa, Sirisuk Eur J Orthop Surg Traumatol Original Article • KNEE - ARTHROPLASTY OBJECTIVE: Gap planning in navigated total knee arthroplasty (TKA) is a critical concern. Osteophytes are normally removed prior to gap planning, with the exception of posterior condylar osteophytes of the femur, which are removed after posterior condylar resection. This study investigated how posterior condylar osteophytes affect gap balancing during surgery. METHODS: This prospective study was conducted on 40 primary varus osteoarthritic knees with a posterior condylar osteophyte that underwent TKA navigation. For all knees, computed tomography (CT) was performed to evaluate osteophyte position. The extension gap and flexion gap were determined under navigation using a tension device with a distraction force of 44 lb. The extension gap and flexion gap were measured before and after osteophyte removal. RESULTS: This study revealed that the average osteophyte thickness after removal was 7.75 ± 5.34 mm. The average extension gap change was 0.64 ± 0.80 mm, and the average flexion gap change was 0.85 ± 1.12 mm. With respect to increases in the medial extension gap, lateral extension gap, medial flexion gap and lateral flexion gap, the average effects of posterior condylar osteophyte removal were 0.74 ± 0.81 mm, 0.53 ± 0.96 mm, 0.71 ± 0.97 mm and 1.00 ± 1.41 mm, respectively. Posterior condylar osteophyte thickness was also significantly associated with increases in the lateral extension gap (R(2) = 0.107, p = 0.03), medial flexion gap (R(2) = 0.101, p = 0.04) and lateral flexion gap (R(2) = 0.107, p = 0.04). CONCLUSION: These results indicated that posterior condylar osteophytes of the femur affect gap balancing during TKA navigation. Springer Paris 2018-01-04 2018 /pmc/articles/PMC5906486/ /pubmed/29302780 http://dx.doi.org/10.1007/s00590-017-2118-2 Text en © The Author(s) 2018 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
spellingShingle Original Article • KNEE - ARTHROPLASTY
Sriphirom, Pornpavit
Siramanakul, Chaiyaporn
Chanopas, Boonyawat
Boonruksa, Sirisuk
Effects of posterior condylar osteophytes on gap balancing in computer-assisted total knee arthroplasty with posterior cruciate ligament sacrifice
title Effects of posterior condylar osteophytes on gap balancing in computer-assisted total knee arthroplasty with posterior cruciate ligament sacrifice
title_full Effects of posterior condylar osteophytes on gap balancing in computer-assisted total knee arthroplasty with posterior cruciate ligament sacrifice
title_fullStr Effects of posterior condylar osteophytes on gap balancing in computer-assisted total knee arthroplasty with posterior cruciate ligament sacrifice
title_full_unstemmed Effects of posterior condylar osteophytes on gap balancing in computer-assisted total knee arthroplasty with posterior cruciate ligament sacrifice
title_short Effects of posterior condylar osteophytes on gap balancing in computer-assisted total knee arthroplasty with posterior cruciate ligament sacrifice
title_sort effects of posterior condylar osteophytes on gap balancing in computer-assisted total knee arthroplasty with posterior cruciate ligament sacrifice
topic Original Article • KNEE - ARTHROPLASTY
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5906486/
https://www.ncbi.nlm.nih.gov/pubmed/29302780
http://dx.doi.org/10.1007/s00590-017-2118-2
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