Upon the abasement of the Shogun's authority after the Onin Rebellion, Sankan Shishiki (other than the Hosokawa clan) also fell, and when in the middle of the Age of Civil War the power of the Hosokawa clan weakened, the various systems of Muromachi Bakufu became mere terms.
応仁の乱以降、将軍の権威が失墜すると細川氏以外の三管四職も没落し、さらに戦国時代中期に至って細川氏の勢力が減退すると室町幕府の諸制度は形骸化していった。