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 .
Computer-assisted knee arthroplasty versus a conventional jig-based technique. A randomised, prospective trial.
We have compared a new technique of computer-assisted knee arthroplasty with the current conventional jig-based technique in 70 patients r and omly allocated to receive either of the methods .  Post-operative CT was performed according to the Perth CT Knee Arthroplasty protocol and pre- and post-operative Maquet views of the limb were taken . Intra-operative and peri-operative morbidity data were collected and blood loss measured . Post-operative CT showed a significant improvement in the alignment of the components using computer-assisted surgery in regard to femoral varus/valgus ( p = 0.032 ) , femoral rotation ( p = 0.001 ) , tibial varus/valgus ( p = 0.047 ) tibial posterior slope ( p = 0.0001 ) , tibial rotation ( p = 0.011 ) and femorotibial mismatch ( p = 0.037 ) . St and ing alignment was also improved ( p = 0.004 ) and blood loss was less ( p = 0.0001 ) . Computer-assisted surgery took longer with a mean increase of 13 minutes ( p = 0.0001 )
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 .