TITLE

Computer-assisted total knee arthroplasty versus the conventional technique: how precise is navigation in clinical routine?

AUTHOR(S)
Tingart, Markus; Lüring, Christian; Bäthis, Holger; Beckmann, Johannes; Grifka, Joachim; Perlick, Lars
PUB. DATE
January 2008
SOURCE
Knee Surgery, Sports Traumatology, Arthroscopy;Jan2008, Vol. 16 Issue 1, p44
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Restoration of the mechanical leg axis and component positioning are crucial factors affecting long-term results in total knee arthroplasty (TKA). In a prospective study, 1,000 patients were operated on either using a CT-free navigation system or the conventional jig-based technique. Leg alignment and component orientation were determined on postoperative X-rays. The mechanical leg axis was significantly better in the computer-assisted group (95%, within ±3° varus/valgus) compared to the conventional group (74%, within ±3° varus/valgus) ( P < 0.001). On average, the operating time was increased by 8 min in the computer-assisted group. No significant differences were seen between senior and younger surgeons regarding postoperative leg alignment and operating time. Computer-assisted TKA leads to a more accurate restoration of leg alignment and component orientation compared to the conventional jig-based technique. Potential benefits in long-term outcome and functional improvement require further investigation.
ACCESSION #
28329224

 

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