How does electromagnetic navigation stack up against infrared navigation in minimally invasive total knee arthroplasties?

被引:27
作者
Lionberger, David R. [1 ]
Weise, Jennifer [1 ]
Ho, David M. [1 ]
Haddad, John L. [2 ]
机构
[1] SW Orthoped Grp LLP, Houston, TX 77030 USA
[2] Cornell Univ, Methodist Hosp, Weill Med Coll, Dept Radiol, Houston, TX USA
关键词
total knee arthroplasty; electromagnetic navigation; mechanical alignment; minimally invasive; surgery; computer-assisted orthopedic surgery;
D O I
10.1016/j.arth.2007.07.005
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Forty-six primary total knee arthroplasties were performed using either an electromagnetic (EM) or infrared (IR) navigation system. In this IRB-approved study, patients were evaluated clinically and for accuracy using spiral computed tomographic imaging and 36-in standing radiographs. Although EM navigation was subject to metal interference, it was not as drastic as line-of-sight interference with IR navigation. Mechanical alignment was ideal in 92.9% of EM and 90.0% of IR cases based on spiral computed tomographic imaging and 100% of EM and 95% of IR cases based on x-ray. Individual measurements of component varus/valgus and sagittal measurements showed EM to be equivalent to IR, with both systems producing subdegree accuracy in 95% of the readings.
引用
收藏
页码:573 / 580
页数:8
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