侧副三角
Trigonum collaterale
定义
侧副三角是一个扁平的三角形区域，位于后角与下角之间。
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/).
