The Implementation Method And Inquiry Of Femoral Neck Axis In The Three-dimensional Model

Objective: Application of Mimics10.01 software in 3D reconstruction of domestic targets the elderly femoral neck, Verify the scholars at home and abroad commonly used three kinds of two-dimensional image on the femoral head and neck, and a method for determining the axis of the femoral head and neck axis to determine the most optimal method of fixed axis.Methords: 2011 January to 2014 October in the selection of Radiology Shandong Provincial Traditional Chinese Medical Hospital for hip CT three-dimensional imaging 30 elderly men(aged 60 years and above) object. Obtain the image data, 3D reconstruction of the right hip joint by using the Mimics10.01 software, By using three kinds of two-dimensional image on the femoral head and neck axis determination method, 1. X-ray method of fixed axis 2. a single ct fixed axis method 3.method of murphy. Axis positioning in head and neck,of 3d model, The axis of the murphy method is defined as zero baseline, easurement of two specific Angle, "X-ray fixed axis method" and "murphy " into the coronary aspect Angle A, "a single ct fixed axis method" and "murphy " form of a transverse plane Angle B And the radius of femoral head, were analyzed.Results : 1. Two points determine the head and neck axis(heart femoral head and femoral neck particular point), Three kinds of two-dimensional image of the femoral head and neck axis determination method in 3 d model of the femoral neck "murphy method" is the most feasible when a specific point. 2.Three kinds of two-dimensional image on the femoral head and neck, and a method for determining the axis on the 3 d model after fixed axis Angle between the axis. "X-ray fixed axis method" and "murphy law" into coronal Angle by A( X ±S):11.35±3.40. single sample t-test is 0<0.05; "A single ct fixed axis method" and "murphy law" form of a transverse Angle B( X ±S):9.92±2.97,. single sample t-test is 0<0.05.3. Using the method of Murphy measured in the 3 d model femoral surface is measured with the femoral head radius to determine the most feasible, come to( X ±S):24.64±1.23mmConclusion: 1. "Murphy " of the femoral head radius measurement method is the most accurate 2. "Murphy " of the femoral head and neck axis locating method is a common three kinds of femoral neck and shaft positioning method is the most accurate method. 3. Will be 2d femoral head heart determination method is introduced into 3 d, 3d point method of the femoral head heart 4. In the 3d model for the femoral neck and shaft positioning, and related measurements provide measurement standard.