Pivot joint Pivot joint In animal anatomy, a pivot joint (trochoid joint, rotary joint, lateral ginglymus) is a type of synovial joint. In pivot joints, the axis of a convex articular surface is parallel with the longitudinal axis of the bone. According to one classification system, a pivot joint like the other synovial joint —the hinge joint has one degree of freedom. Note that the degrees of freedom of a joint is not the same as the same as joint's range of motion. Pivot joints allow for rotation, which can be external (for example when rotating an arm outward), or internal (as
British Gliding Association British Gliding Association The British Gliding Association (BGA) is the governing body for gliding in the United Kingdom. Gliding in the United Kingdom operates through 85 gliding clubs (both civilian and service) which have 2,310 gliders and 9,462 full flying members (including service personnel), though a further 17,000 people have gliding air-experience flights each year. A gliding event first occurred in the UK on a hill at Itford in East Sussex in 1922. The meeting was largely a publicity stunt by the "Daily Mail" newspaper which had offered a prize of one thousand pounds for the longest flight. However little