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[尺骨]茎突
Processus styloideus ulnae
定义
尺骨的下端较小，呈现两个隆起：外侧较大者为圆形关节隆起，称为尺骨头；内侧较窄且更为突出者为非关节隆起，即茎突。
茎突从骨的内侧和背侧部分突出；其位置略低于尺骨头，其圆形末端提供腕关节尺侧副韧带的附着处。尺骨头与茎突之间由一个凹陷分隔，该凹陷供三角形关节盘顶端附着，其背侧有一浅沟，供尺侧腕伸肌肌腱走行。
參考資料
This definition incorporates text from a public domain edition of Gray's Anatomy (20th U.S. edition of Gray's Anatomy of the Human Body, published in 1918 – from http://www.bartleby.com/107/).
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