Reliability of computer-assisted surgery as an intraoperative ruler in navigated high tibial osteotomy

• DOI: 10.1007/s00402-010-1145-9
• Publication Date: 2010-07-05T15:04:59Z
• Authors: Florian Gebhard; Christian Krettek; Tobias Hüfner; Paul A. Grützner; Ulrich Stöckle; Andreas B. Imhoff; Stephan Lorenz; Jan Ljungqvist; Peter Keppler
• Keywords: High tibial osteotomy; Ruler

Computer-assisted surgery (CAS) can act as an intraoperative ruler in high tibial osteotomy (HTO) to visualize continuously the leg during surgery. The aim of study is evaluate accuracy CAS with respect preoperative planning and postoperative deviation from planned axis HTO. In addition, influence surgeon experience well operation time perioperative complications are analyzed. A prospective multicenter case series follow-up at 6 weeks was performed six centers. Medial open-wedge HTO Tomofix® done using computer assisted navigation technique Brainlab VV Osteotomy 1.0 module. Fifty-one patients medial gonarthritis were treated navigated rate 98%. majority HTO–CAS fell within tolerated limit ±3° for deviation, however, seven reported deviations outside this range: three had >3°–4.5° four >4.5°, respectively. Eight documented, partially resulting technical problems associated system. During 6-week period, experienced, all not technology. about 85% cases, a perfect result terms mechanical could be achieved. Computer assistance proved helpful tool regarding control axis. Level I, High quality (all enrolled same point ≥80% patients).