[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.
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[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.

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