The subtalar joint contributes to 10% of dorsiflexion of the ankle. There are three articulating facets between the talus and the calcaneus, delineated as the anterior, middle and posterior facets. The sustentaculum tali forms the floor of middle facet, and the anterior facet articulates with the head of the talus, and sits lateral and congruent to the middle facet.
The most abundant element on Earth is oxygen, but the most abundant element in the entire universe is hydrogen. On Earth, oxygen makes up approximately 47 percent of the Earth's mass and is found both in Earth's atmosphere and crust. Continue Reading.
No Comments. Water is the most abundant compound in the universe; its composition consists of the 1st and 3rd most abundant elements, hydrogen and oxygen (helium is the 2nd most abundant element).Water in liquid form is common on Earth, but on other planetary bodies in the Solar System it is usually present as vapour or ice.o Comments. Water is the most abundant compound in the universe; its composition consists of the 1st and 3rd most abundant elements, hydrogen and oxygen (helium is the 2nd most abundant element).