Provided is a leg-bone
lower limb force line automatic detection method. The leg-bone
lower limb force line automatic detection method includes the steps of: (1), acquiring CT image data; (2), conducting segmentation and three-dimensional reconstruction on bones of a patient in CT images; (3), regarding a
femur three-dimensional model, through a method of using double section planes for acquiringmass centers, determining the positions of
femoral head sphere center points; (4), regarding the
femur three-dimensional model and a
tibia three-dimensional model, by adopting a rigidity and elasticity integrated registration method, acquiring coordinates of knee-joint intercondylar concave center points, tibial
plateau center points and
ankle-joint center points; (5), through connection lines between
femoral head sphere centers and the knee-joint intercondylar concave center points, obtaining
femur mechanical axes, and through connection lines between the tibial
plateau center points and theankle-joint center points, obtaining
tibia mechanical axes; and (6), regarding the femur three-dimensional model or the
tibia three-dimensional model, by adopting a method of using iteration for searching for maximum distance points, determining
anatomy axes of femurs or tibias. A leg-bone
lower limb force line automatic detection device is also disclosed.