医学类外文文献.pdf

Hip joint center location by fitting conchoid shape
to the acetabular rim region of MR Images

MyungJin Kang
MIRALab, CUI, University of Geneva, 24 rue du General-Dufour, Geneva, Switzerland
center of rotation by fitting a sphere to paths followed by a
Abstract—This paper proposes a hip joint center (HJC) femur-fixed point as it is moved about the hip joint.
location method based on the approximating of the acetabulum
The center of this sphere is the estimated hip joint
with a conchoid shape to acetabular rim in MR Images. As the
human hip joint is not a perfect sphere but it is close to a center. These studies have been essentially considering that
conchoid shape, the accurate location of the HJC cannot be the femoral head shape is a perfect sphere. It is clear from
computed as the center of a sphere. By approximating the daily clinical information that the femoral head is not a
acetabulum with a conchoid shape, it is possible pensate sphere and that this approximation is not valid for the
a possible hip joint center location error due to the uracy purpose of understanding the origins of osteoarthritis.
of 3D surface models for using functional method to calculate
This paper proposes the HJC location method by fitting
HJC location. For the hip joint surgery planning, it is
necessary to assess patients’ hip range of motions based on th