Introduction: Previous authors (1,2) have suggested that the use of navigation during total knee arthroplasty (TKA) can have a role in reducing intraoperative blood loss; two studies (1,2) have shown reduced volume of blood collected in drains when navigation is used, in comparison to traditional methods. Methods: Perioperative blood loss was compared in 136 patients who underwent total knee replacement arthroplasty (TKA). Patients were selected from a prospectively collected database of all those undergoing arthroplasty at the Golden Jubilee National Hospital between July 2005-January 2006. 68 patients had standard instrumentation TKA and 68 patients underwent computer navigated TKA. Both the StrykerVision and Orthopilot navigation systems were used. Mean BMI was 30.8 in the navigated group, 30.74 in the non-navigated group. Mean age was 67.3 years in the navigated group, and 68.4 years in the non-navigated group. There were an equal number of males and females in each group. In the 68 patients who had navigated surgery, the StrykerVision system was used in 36 patients, and the Orthopilot system in 32. We conducted planned comparisons to determine the effect of blood loss between navigated and non-navigated groups, as well as the effect of gender and obesity (BMI <30 vs BMI >30).
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机译：简介：以前的作者（1,2）表明，在整个膝关节关节成形术期间使用导航（TKA）可以在降低术中失血中具有作用;与传统方法相比，两项研究（1,2）显示了在使用导航时收集的血液中收集的血液体积减少。方法：在136名患者接受膝关节置换关节置换术（TKA）的136名患者中比较了围手术失血。患者选自2005年7月至2006年1月至2006年1月至2006年1月至2006年1月至2006年1月至2006年1月至2006年至2006年1月的所有关节成形术的数据库中.68例患者有标准仪器TKA和68名患者接受过计算机导航的TKA。使用Strykervision和Orthopilot导航系统。导航组的平均BMI是30.8，在非导航组中30.74。导航集团的平均年龄为67.3岁，并在非导航集团中68.4岁。每组中有一个平等数量的男性和女性。在68名患有导航手术的患者中，36名患者中使用了Strykervision系统，并在32岁的矫形系统中使用。我们进行了计划的比较，以确定导航和非导航组之间失血的影响，以及效果性别和肥胖症（BMI <30 VS BMI> 30）。
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