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Method for measuring central bearing diameter of hip joint

A measurement method and technology of the hip joint, applied in computerized tomography scanners, echo tomography, etc., can solve the problems of many intermediate parameters and increase the difficulty of measurement, and achieve the effect of simple measurement operation

Inactive Publication Date: 2011-10-05
THE FIRST AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIVERSITY OF PLA
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Problems solved by technology

The comprehensive index Z can evaluate the stability of the hip joint, but to obtain the value of the comprehensive index Z, it is necessary to measure the femoral head index and the femoral head acetabular index first. The measurement process involves many intermediate parameters, which will increase the difficulty of measurement accordingly

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  • Method for measuring central bearing diameter of hip joint
  • Method for measuring central bearing diameter of hip joint
  • Method for measuring central bearing diameter of hip joint

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Embodiment Construction

[0029] The measuring method of the median load-bearing diameter of the hip joint of the present invention comprises the following steps:

[0030] (1) Place the target to be measured. Place the target to be measured on the examination bed according to the anatomical posture, and the target to be measured includes a hip joint specimen or a human body;

[0031] (2) CT scanning and 3D reconstruction scanning range from the upper edge of the acetabulum to the lesser trochanter of the femur, the scanning parameters are 120KV, the effective mAs is 150, the collimator width is 0.6mm, and the reconstruction slice thickness is 1mm;

[0032] Three-dimensional reconstruction uses volume reconstruction imaging processing to reconstruct the hip joint and obtain a three-dimensional image of the hip joint;

[0033] (3) Obtain the definition line of the median load-bearing diameter

[0034] Adjust the three-dimensional image of the hip joint to the lateral image, and use the cropping tool in ...

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Abstract

The invention discloses a method for measuring a hip joint by utilizing a multi-slice spiral computer tomography (CT) three-dimensional reconstruction technology. The method for measuring the central bearing diameter of the hip joint comprises the following steps of: 1, placing an object to be measured; 2, performing CT scanning and three-dimensional reconstruction; and 3, acquiring a definition line of the central bearing diameter, adjusting a three-dimensional image of the hip joint to a lateral image, clipping and removing a front side image of the whole hip joint along the central axis position of femoral neck; adjusting the three-dimensional image of the hip joint to a frontal image, fitting femoral head articular surfaces, drawing a circle, making horizontal diameter through a corresponding center, wherein the intersection points of the horizontal diameter and the circle are a point A and a point B, the point B is an inner side intersection point, and the point A is an outer side intersection point; and making a vertical line of the point A and point B through an external acetabulum edge C, wherein the vertical point is a point D, and a line segment BD is the central bearingdiameter of the hip joint. By the method for measuring the central bearing diameter of the hip joint, the technical defect of measuring middle bearing parameters in the prior art is overcome, and simple measuring for shape parameters of bearing stability of the hip joint is realized.

Description

technical field [0001] The invention relates to a method for measuring hip joints in orthopedic medicine, in particular to a method for measuring hip joints by using multi-slice spiral CT three-dimensional reconstruction technology. Background technique [0002] Hip joint measurement refers to the measurement of hip joint morphological parameters. Hip joint morphological parameters (parameters related to weight-bearing relationship are especially important) are important indicators for hip prosthesis design and prosthesis selection. [0003] When designing or selecting hip prosthesis or related prostheses, it is impossible to use stereo imaging of the entire hip joint as an index, which will lead to unclear indicators and difficult operation. In the actual design and selection process, several hip joints are often selected Parameters related to joint load-bearing and stability were used as the main indicators. [0004] The current evaluation parameters of the hip include th...

Claims

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Application Information

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IPC IPC(8): A61B6/03
Inventor 戴明德王健周代全陈伟蔡萍陆明黄学全黎川张琳李传明张久权程琳胡春芳陈莉
Owner THE FIRST AFFILIATED HOSPITAL OF THIRD MILITARY MEDICAL UNIVERSITY OF PLA
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