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KMID : 0357520100330040335
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Journal of Radiological Science and Technology
2010 Volume.33 No. 4 p.335 ~ p.340
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The Tangential Projection Method for Checking Existence and Nonexistence of Radius Groove Penetration of Screw after Distal Radius Fracture Operation Used the T-type Plate
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Seo Sun-Youl
Hong Ki-Jang
Han Man-Seok
Kim Yong-Kyun
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Abstract
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This paper is about a projection method to check existence of radius groove penetration of screw after distal radius fracture operation using the T-type plate. Angle of Radius groove was analyzed by fifty one CT images that contains patients’ wrist and twenty cases of radius specimens. After making radius phantom by plaster, we set the screw so that it penetrated 2.4 mm depth of radius groove. Then, we projected the phantom by X-ray in change of the elevation and supination angle of distal radius by 5 degree interval on 0~30 degree. The average value of groove angle in the wrist CT images was 14.4 degree and the radius specimens was 16.3 degree. Screws penetrating radius groove of the phantom have different lengths according to elevation angle and supination angle. Consequently, in order to confirm existence and nonexistence of radius groove penetration of the screw in tangential projection after distal radius fracture operation using the T-type plate, we recommend 5 degree of elevation angle and 20 degree of supination angle.
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KEYWORD
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Radius groove, Radius phantom, T-type plate
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