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1·The background image is taken from an attachment to a document called gradblue10.jpg.

背景图像取自名为gradblue10 . j pg的文档的附件。

2·Background: Radiographic landmarks for medial knee attachment sites during anatomic repairs or reconstructions are unknown.

背景：膝关节内侧解剖修复或重建时的影像学边界仍然不清楚。