Evaluation of accuracy in ankle center location for tibial mechanical axis identification

被引:25
作者
Nofrini, L
Slomczykowski, M
Iacono, F
Marcacci, M
机构
[1] Ist Ortoped Rizzoli, Biomech Lab, I-40136 Bologna, Italy
[2] DePuy Int Ltd, New Surg Technol Grp, Leeds, W Yorkshire, England
关键词
ankle center estimation; computer assisted surgery; tibial mechanical axis;
D O I
10.1080/08941930490269619
中图分类号
R61 [外科手术学];
学科分类号
摘要
Many surgical computer-assisted systems use mechanical axis identification as a reference for their computations. The goal of this study was to compare three methods to determine the location of the distal point of the tibial mechanical axis, based on percutaneous digitization of definite anatomical landmarks. In particular, we evaluated the accuracy of the identified tibial mechanical axis and the repeatability of the obtained results. Tests performed by four surgeons on cadaveric knees showed that the variability in identifying the ankle center using two out of the three methods presented introduced an inaccuracy in the mechanical axis identification of around 1degrees. This makes their use suitable for computer-assisted systems.
引用
收藏
页码:23 / 29
页数:7
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