Non-invasive navigation in total knee arthroplasty : a validation study / Harold Jennart in Acta Orthopaedica Belgica, Vol. 86/3 (Septembre 2020)

Public ISBD [article]  inActa Orthopaedica Belgica > Vol. 86/3 (Septembre 2020) . - p. 434-439 Titre : Non-invasive navigation in total knee arthroplasty : a validation study Type de document : texte imprimé Auteurs : Harold Jennart, Auteur Année de publication : 2020 Article en page(s) : p. 434-439 Langues : Anglais (eng) Résumé : The purpose of this study was to evaluate intraope- rative alignment during total knee arthroplasty using a handheld navigation system, iAssist, in comparison with conventional optical surgical navigation. Sixty-two consecutive patients were enrolled in this prospective study. iAssist was used to determine implant component positioning. Orientation of the cuts were verified using a conventional optical sur- gical navigation system. We compared the iAssist system with the conventional system in terms of accuracy, percentage of outliers, bias, and precision. The occurrence of component malalignment was low. Taking standard radiography as the reference, there were no relevant differences between the handheld device and optical navigation in terms of measure- ment of accuracy or in outlier occurrence. Bias was small for both technologies, and precision was com- parable. The study provides preliminary evidence that the use of iAssist leads to satisfactory implant alignment. The results from this study imply that iAssist could be a viable alternative to conventional optical navigation. Permalink : ./index.php?lvl=notice_display&id=92009 [article] Non-invasive navigation in total knee arthroplasty : a validation study [texte imprimé] / Harold Jennart, Auteur . - 2020 . - p. 434-439. Langues : Anglais (eng) in Acta Orthopaedica Belgica > Vol. 86/3 (Septembre 2020) . - p. 434-439 Résumé : The purpose of this study was to evaluate intraope- rative alignment during total knee arthroplasty using a handheld navigation system, iAssist, in comparison with conventional optical surgical navigation. Sixty-two consecutive patients were enrolled in this prospective study. iAssist was used to determine implant component positioning. Orientation of the cuts were verified using a conventional optical sur- gical navigation system. We compared the iAssist system with the conventional system in terms of accuracy, percentage of outliers, bias, and precision. The occurrence of component malalignment was low. Taking standard radiography as the reference, there were no relevant differences between the handheld device and optical navigation in terms of measure- ment of accuracy or in outlier occurrence. Bias was small for both technologies, and precision was com- parable. The study provides preliminary evidence that the use of iAssist leads to satisfactory implant alignment. The results from this study imply that iAssist could be a viable alternative to conventional optical navigation. Permalink : ./index.php?lvl=notice_display&id=92009

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Reliability of patient specific instrumentation in total knee arthroplasty / Harold Jennart in Acta Orthopaedica Belgica, Vol.81/4 (Décembre 2015)

Public ISBD [article]  inActa Orthopaedica Belgica > Vol.81/4 (Décembre 2015) . - p.668-672 Titre : Reliability of patient specific instrumentation in total knee arthroplasty Type de document : texte imprimé Auteurs : Harold Jennart ; Marie-Ange Ngo Yamben ; Theofylaktos Kyriakidis Année de publication : 2015 Article en page(s) : p.668-672 Langues : Anglais (eng) Résumé : The aim of this study was to compare the precision between Patient Specific Instrumentation (PSI) and Conventional Instrumentation (CI) as determined intra-operatively by a pinless navigation system. Eighty patients were included in this prospective comparative study and they were divided into two homogeneous groups. We defined an original score from 6 to 30 points to evaluate the accuracy of the position of the cutting guides. This score is based on 6 objective criteria. The analysis indicated that PSI was not superior to conventional instrumentation in the overall score (p = 0.949). Moreover, no statistically significant difference was observed for any individual criteria of our score. Level of evidence II. Permalink : ./index.php?lvl=notice_display&id=42350 [article] Reliability of patient specific instrumentation in total knee arthroplasty [texte imprimé] / Harold Jennart ; Marie-Ange Ngo Yamben ; Theofylaktos Kyriakidis . - 2015 . - p.668-672. Langues : Anglais (eng) in Acta Orthopaedica Belgica > Vol.81/4 (Décembre 2015) . - p.668-672 Résumé : The aim of this study was to compare the precision between Patient Specific Instrumentation (PSI) and Conventional Instrumentation (CI) as determined intra-operatively by a pinless navigation system. Eighty patients were included in this prospective comparative study and they were divided into two homogeneous groups. We defined an original score from 6 to 30 points to evaluate the accuracy of the position of the cutting guides. This score is based on 6 objective criteria. The analysis indicated that PSI was not superior to conventional instrumentation in the overall score (p = 0.949). Moreover, no statistically significant difference was observed for any individual criteria of our score. Level of evidence II. Permalink : ./index.php?lvl=notice_display&id=42350

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