有鉤骨鉤基部撮影における撮影体位の検討

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タイトル別名
  • A Review of the Position Adopted by Patients When Acquiring Images of the Base of the Hamate Hook
  • 臨床技術 有鉤骨鉤基部撮影における撮影体位の検討
  • リンショウ ギジュツ ユウコウコツコウキブ サツエイ ニ オケル サツエイ タイイ ノ ケントウ

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The hamate bone, one of the carpal (wrist) bones, has a large uncinate process protruding from the palm side. In sports such as golf and tennis, the hamate bone can break if is subjected to a high external force, such as from the handle of a racquet or club. At our hospital we take X-ray images of the hamate bone from two directions: an axial image through the carpal tunnel and an image at the base of the hamate hook (conventional method). While the conventional method makes it easy to create images of the base of the hamate hook, the patient may suffer pain during image-taking because the hamate bone is pulled to cause radial flexion. We therefore investigated a method of imaging that would create three-dimensional computed tomography (3DCT) images of the base of the hamate hook in which the patient would only have to only rotate the wrist externally and elevate the fore-arm without any radial flexion. Our results suggest that it is possible to obtain images of the base of the hamate hook as clear as those acquired using the conventional method with the patient in a comfortable and painless position taking images at an external rotation angle of 50.3° and a forearm elevation angle of 20.3°.

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