Method and device for measuring ulna near-end parameters based on CT three-dimensional reconstruction image

Abstract

The invention provides an ulna near-end parameter measurement method and device based on a CT three-dimensional reconstruction image, and the method comprises the steps: obtaining CT data, reconstructing the CT data, and extracting an ulna near-end three-dimensional model; reference points are determined, wherein the reference points comprise a standard side position first ulna back point A, a standard side position second ulna back point B, a coronal tip point, an olecranon tip point, a back hook angular point C, a first flat point D, a second flat point E, a first ulna ridge point F and a second ulna ridge point G; determining measurement parameters according to the reference point, wherein the measurement parameters comprise a proximal ulna dorsal angle (anterior angle), an anterior angle point pitch, an introversion angle, an introversion angle point pitch, a dorsal hook angle and an olecranon-ulna shaft included angle; and measuring the coronal process parameters by using the measurement parameters.

Description

technical field [0001] The invention relates to the field of computer technology, in particular to a method and device for measuring parameters of the proximal end of the ulna based on CT three-dimensional reconstruction images. Background technique [0002] Proximal ulna fractures are complex elbow fractures. According to reports, proximal ulna fractures account for about 1.1% of systemic fractures and 21% of forearm fractures. Young and middle-aged men are the high-risk group. If not handled properly, it will seriously affect the upper limb function of patients, which makes proximal ulna fractures a constraint. Important type of injury for patients recovering from sports injuries and military training injuries. The anatomy of the proximal ulna is complex and morphologically variable. Restoration of anatomical alignment is critical to restore normal biomechanics and avoid early postoperative arthritis, elbow subluxation, and loss of function. The anatomical plate is the ...

AI Technical Summary

Problems solved by technology

Although it is easy to obtain two-dimensional images, compared with computed tomography, part of the parameter information will be lost, and due to the limitation of the imaging position, it is impossible to systematically and comprehensively quantify the parameters of the proximal ulna

However, due to the large anatomical variation of the proximal ulna and the unevenness of the bone surface, the standard method for selecting anatomical landmarks in this study is not applicable to all bone types

And when measuring the spatial angle, the situation of straight lines with different planes is not considered

This greatly hinders the clinical application of the measurement method described in this study, with poor reproducibility

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