Biomedical Engineering Reference
In-Depth Information
estimate of the center of the hip and the center of the
shoulder. Whatever method is used, it is necessary to know
that the characteristics of the specific movement carried out
by the subject also play an important role in the accuracy of
the estimate [BEG 07, CAM 06]. Most of the studies
comparing the two approaches conclude that functional
methods are better, despite the fact that the regressions
recently proposed by Harrington
et al
. [HAR 07] also produce
good results [SAN 11].
Figure 4.6
.
Example of a specific movement
to collect when using functional methods for the
positioning of the center of the femoral head
4.3.2.
Sensitivity of joint kinematics to these errors
Della Croce
et al
. [DEL 99] assessed the intra- and
interoperator variability in the orientation of orthonormal
coordinate systems linked to the body segments Segment
Coordinate System (SCS). For elongated segments, the
