Computer-assisted knee arthroplasty versus a conventional jig-based technique
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- 1 April 2004
- journal article
- clinical trial
- Published by British Editorial Society of Bone & Joint Surgery in The Journal of Bone and Joint Surgery. British volume
- Vol. 86-B (3) , 372-377
- https://doi.org/10.1302/0301-620x.86b3.14643
Abstract
We have compared a new technique of computer-assisted knee arthroplasty with the current conventional jig-based technique in 70 patients randomly 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). Standing 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).Keywords
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