Reliability of Imageless Computer-Assisted Navigation for Femoral Rotational Alignment in Total Knee Arthroplasty

INTRODUCTION: The aim of this study was to evaluate the reliability of the femoral component rotation on intraoperative data recorded in a computer-assisted navigation system (CAN-FRA) compared with the post-operative femoral component rotation observed on computed tomography (CT-FRA). MATERIALS...

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Main Authors: Leelasestaporn C, Thuwapitchayanant M, Sirithanapipat P, Sa-ngasoongsong P, Ruengsilsuwit P
Format: Article
Language:English
Published: Malaysian Orthopaedic Association 2021-03-01
Series:Malaysian Orthopaedic Journal
Subjects:
Online Access:https://www.morthoj.org/2021/v15n1/total-knee-arthroplasty.pdf
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spelling doaj-88cdda4d70a348ff99a6fe0f4da389802021-05-03T05:06:39ZengMalaysian Orthopaedic AssociationMalaysian Orthopaedic Journal1985-25332232-111X2021-03-01151798410.5704/MOJ.2103.012Reliability of Imageless Computer-Assisted Navigation for Femoral Rotational Alignment in Total Knee ArthroplastyLeelasestaporn C0Thuwapitchayanant M1Sirithanapipat P2Sa-ngasoongsong P3Ruengsilsuwit P4MDMDMDMDMDINTRODUCTION: The aim of this study was to evaluate the reliability of the femoral component rotation on intraoperative data recorded in a computer-assisted navigation system (CAN-FRA) compared with the post-operative femoral component rotation observed on computed tomography (CT-FRA). MATERIALS AND METHODS: Computer-assisted total knee arthroplasty (TKA) or primary osteoarthritis of the knee was performed in 51 knees in 36 patients with a mean age of 69.51 years. All procedures were performed by a single surgeon using the same implant design. The intraclass correlation coefficient (ICC) was used to compare the intraoperative CAN-FRA with the post-operative CT-FRA. The angle between the anatomical epicondylar axis and the posterior condylar axis of the implant (CT-FRA) was measured at two separate timepoints by three observers who were blinded to the intra-operative CAN-FRA. Internal rotation was defined as rotation in the negative direction, while external rotation was defined as positive. RESULTS: The mean intra-operative CAN-FRA was 0.1° ± 2.8° (range -5.0° to 5.5°). The mean post-operative CT-FRA was -1.3° ± 2.1° (range -4.6° to 4.4°). The mean difference between the CAN-FRA and the CT-FRA was -1.3° ± 2.2° (range -7.9° to 2.4°). The respective ICC values for the three observers were 0.92, 0.94, and 0.93, while the respective intra-observer coefficients were 0.91, 0.85, and 0.90. The ICC for the intra-operative CAN-FRA versus the postoperative CT-FRA was 0.71. CONCLUSION: This study shows that using a computerassisted navigation system in TKA achieves reliable results and helps to achieve optimal positioning of the femoral component and rotation alignment correction.https://www.morthoj.org/2021/v15n1/total-knee-arthroplasty.pdfcas in tkafemoral component rotationnavigation in tka
collection DOAJ
language English
format Article
sources DOAJ
author Leelasestaporn C
Thuwapitchayanant M
Sirithanapipat P
Sa-ngasoongsong P
Ruengsilsuwit P
spellingShingle Leelasestaporn C
Thuwapitchayanant M
Sirithanapipat P
Sa-ngasoongsong P
Ruengsilsuwit P
Reliability of Imageless Computer-Assisted Navigation for Femoral Rotational Alignment in Total Knee Arthroplasty
Malaysian Orthopaedic Journal
cas in tka
femoral component rotation
navigation in tka
author_facet Leelasestaporn C
Thuwapitchayanant M
Sirithanapipat P
Sa-ngasoongsong P
Ruengsilsuwit P
author_sort Leelasestaporn C
title Reliability of Imageless Computer-Assisted Navigation for Femoral Rotational Alignment in Total Knee Arthroplasty
title_short Reliability of Imageless Computer-Assisted Navigation for Femoral Rotational Alignment in Total Knee Arthroplasty
title_full Reliability of Imageless Computer-Assisted Navigation for Femoral Rotational Alignment in Total Knee Arthroplasty
title_fullStr Reliability of Imageless Computer-Assisted Navigation for Femoral Rotational Alignment in Total Knee Arthroplasty
title_full_unstemmed Reliability of Imageless Computer-Assisted Navigation for Femoral Rotational Alignment in Total Knee Arthroplasty
title_sort reliability of imageless computer-assisted navigation for femoral rotational alignment in total knee arthroplasty
publisher Malaysian Orthopaedic Association
series Malaysian Orthopaedic Journal
issn 1985-2533
2232-111X
publishDate 2021-03-01
description INTRODUCTION: The aim of this study was to evaluate the reliability of the femoral component rotation on intraoperative data recorded in a computer-assisted navigation system (CAN-FRA) compared with the post-operative femoral component rotation observed on computed tomography (CT-FRA). MATERIALS AND METHODS: Computer-assisted total knee arthroplasty (TKA) or primary osteoarthritis of the knee was performed in 51 knees in 36 patients with a mean age of 69.51 years. All procedures were performed by a single surgeon using the same implant design. The intraclass correlation coefficient (ICC) was used to compare the intraoperative CAN-FRA with the post-operative CT-FRA. The angle between the anatomical epicondylar axis and the posterior condylar axis of the implant (CT-FRA) was measured at two separate timepoints by three observers who were blinded to the intra-operative CAN-FRA. Internal rotation was defined as rotation in the negative direction, while external rotation was defined as positive. RESULTS: The mean intra-operative CAN-FRA was 0.1° ± 2.8° (range -5.0° to 5.5°). The mean post-operative CT-FRA was -1.3° ± 2.1° (range -4.6° to 4.4°). The mean difference between the CAN-FRA and the CT-FRA was -1.3° ± 2.2° (range -7.9° to 2.4°). The respective ICC values for the three observers were 0.92, 0.94, and 0.93, while the respective intra-observer coefficients were 0.91, 0.85, and 0.90. The ICC for the intra-operative CAN-FRA versus the postoperative CT-FRA was 0.71. CONCLUSION: This study shows that using a computerassisted navigation system in TKA achieves reliable results and helps to achieve optimal positioning of the femoral component and rotation alignment correction.
topic cas in tka
femoral component rotation
navigation in tka
url https://www.morthoj.org/2021/v15n1/total-knee-arthroplasty.pdf
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