The majority of adverse events associated with CNTKA were minor and comparable with those seen with conventional TKA .
Clinical outcomes were comparable between the two techniques , with longer-term follow-up suggesting that CNTKA provided no benefit over conventional TKA in terms of sustained functional improvements .
At present , it is unclear whether the significant improvements shown in radiological outcomes after CNTKA translate to measurable clinical benefits .
BACKGROUND Conventional total knee arthroplasty ( TKA ) and the more recently available computer-navigated total knee arthroplasty ( CNTKA ) use alternative methods to achieve correct limb alignment .
This systematic review was undertaken to assess the safety and effectiveness of CNTKA compared with conventional TKA .
Blood loss in computer-assisted mobile bearing total knee arthroplasty. A comparison of computer-assisted surgery with a conventional technique
Computer-assisted surgery ( CAS ) in total knee arthroplasty ( TKA ) could be useful in reducing the overall blood loss . A prospect i ve r and omised 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 st and ard 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 can not accept blood products by reducing blood loss risk . RésuméLa chirurgie assistée par ordinateur dans les prothèses totales du genou peut être utile afin de réduire les pertes sanguines . Matériel et méthode : une étude prospect i ve , r and omisée , 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 recomm and ée 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
The majority of adverse events associated with CNTKA were minor and comparable with those seen with conventional TKA .
Clinical outcomes were comparable between the two techniques , with longer-term follow-up suggesting that CNTKA provided no benefit over conventional TKA in terms of sustained functional improvements .
At present , it is unclear whether the significant improvements shown in radiological outcomes after CNTKA translate to measurable clinical benefits .
BACKGROUND Conventional total knee arthroplasty ( TKA ) and the more recently available computer-navigated total knee arthroplasty ( CNTKA ) use alternative methods to achieve correct limb alignment .
This systematic review was undertaken to assess the safety and effectiveness of CNTKA compared with conventional TKA .