Extensor retinaculum From Wikipedia the free encyclopedia Extensor retinaculum may refer to: Extensor retinaculum of the hand Superior extensor retinaculum of foot Inferior extensor retinaculum of foot Topics referred to by the same term This disambiguation page lists articles associated with the title Extensor retinaculum.If an internal link led you here, you may wish to change the link to point directly to the intended article.