Computer-assisted navigation increases precision of component placement in total knee arthroplasty.

摘要

We read with interest the article "Computer-assisted Navigation Increases Precision of Component Placement in Total Knee Arthroplasty" by Haaker et al in the April 2005 edition of Clinical Orthopaedics and Related Research.3 We appreciate the commendable effort made by the authors for reporting an elaborately conducted study. Comparisons of navigation-assisted total knee arthroplasty (TKA) and conventional TKA rarely mention all the angles of prosthesis implantation and limb alignment and then provide the statistical analysis for each angle. However, the authors used some angles that did not match the references mentioned; moreover, they commented on results as better for a navigation system without providing adequate references for the values that they considered normal or exact.