TY - JOUR
T1 - How Does Electromagnetic Navigation Stack Up Against Infrared Navigation in Minimally Invasive Total Knee Arthroplasties?
AU - Lionberger, Jr., David R.
AU - Weise, Jennifer
AU - Ho, David M.
AU - Haddad, John
PY - 2008/6/1
Y1 - 2008/6/1
N2 - 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.
AB - 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.
KW - computer-assisted orthopedic surgery
KW - electromagnetic navigation
KW - mechanical alignment
KW - minimally invasive
KW - surgery
KW - total knee arthroplasty
UR - http://www.scopus.com/inward/record.url?scp=44449138079&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=44449138079&partnerID=8YFLogxK
U2 - 10.1016/j.arth.2007.07.005
DO - 10.1016/j.arth.2007.07.005
M3 - Article
C2 - 18514877
AN - SCOPUS:44449138079
SN - 0883-5403
VL - 23
SP - 573
EP - 580
JO - Journal of Arthroplasty
JF - Journal of Arthroplasty
IS - 4
ER -