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Randomized Controlled Trial
. 2009 Dec;33(6):1609-13.
doi: 10.1007/s00264-008-0651-7. Epub 2008 Sep 2.

Blood loss in computer-assisted mobile bearing total knee arthroplasty. A comparison of computer-assisted surgery with a conventional technique

F Conteduca  1 , F Massai, R Iorio, E Zanzotto, D Luzon, A Ferretti
Affiliations
Randomized Controlled Trial

Blood loss in computer-assisted mobile bearing total knee arthroplasty. A comparison of computer-assisted surgery with a conventional technique

F Conteduca et al. Int Orthop. 2009 Dec.

Abstract
in English, French

Computer-assisted surgery (CAS) in total knee arthroplasty (TKA) could be useful in reducing the overall blood loss. A prospective randomised study was performed with two groups of 50 patients each of whom were treated for knee arthritis. Patients of group A were treated by a conventional standard procedure, while for patients of group B a specific CAS procedure was used. We determined the intraoperative blood loss according to the Orthopaedic Surgery Transfusion Haemoglobin European Overview (OSTHEO) study. The average blood loss in patients of group A was 1,974 ml (range: 450-3,930 ml) compared to 1,677 ml of patients of group B (range: 500-2,634 ml). A statistically significant difference was found between the two groups (p = 0.0283). Computer-assisted surgery is highly recommended in TKR to save blood. It creates more possibilities to operate on anaemic patients and subjects who cannot accept blood products by reducing blood loss risk.

La chirurgie assistée par ordinateur dans les prothèses totales du genou peut être utile afin de réduire les pertes sanguines. Matériel et méthode: une étude prospective, randomisée, a été réalisée avec deux groupes de 50 patients, chacun, traités pour une arthrose du genou. Les patients du groupe A ont été opérés sur un mode conventionnel alors que l’autre groupe l’a été avec assistance informatique dans le cadre de la navigation. Nous avons déterminé les perte sanguines per-opératoires selon l’évaluation OSTEO. Résultats: le total des pertes sanguines du groupe A a été de 1974 ml en moyenne (de 450 à 3930) en comparaison des 1677 ml des patients du groupe B (de 500 à 2634 ml). La différence est statistiquement significative entre les deux groupes, p = 0,0283). Conclusion: la navigation avec chirurgie assistée par ordinateur est recommandée pour les prothèses de remplacement articulaire afin de réduire les pertes sanguines. Cette technique donne plus de possibilité pour opérer les sujets anémiques qui ne peuvent supporter de grosses pertes sanguines.

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Figures

Fig. 1
Fig. 1
Histogram showing distribution of blood loss in the two groups (percentage of patients)
Fig. 2
Fig. 2
Graphic showing distribution of blood loss in the two groups (total patients)
See this image and copyright information in PMC

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