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Updated: Aug 8, 2026
An Improved Mechanical Testing Method to Assess Bone-implant Anchorage
Published on: February 10, 2014
Determination of the position and orientation of artificial knee implants using markers embedded in a bone:
S Imai1, K Higashijima, A Ishida
1Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University, 2-3-10 Kanda-Surugadai, Chiyoda, Japan.
Abstract:
This study describes the method of determination of the position and orientation of artificial knee implants using a single-plane radiograph. To simplify the 3D/2D matching problem, we proposed to use small markers embedded in a bone. From the image coordinates of markers, it is possible to estimate the position and orientation of implants if the relationship between the markers and the implant is known. The results of the in vitro experiment showed that rms errors in in-plane/out-of-plane translations and rotations were 0.2/2.3 mm and 0.2/0.2 degrees, respectively.
