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 Hang Gliding and Paragliding Association British Hang Gliding and Paragliding Association The British Hang Gliding and Paragliding Association (BHPA), based in Leicester, is the governing body in the UK for hang gliding and paragliding. The BHPA is recognised by the Fédération Aéronautique Internationale, the Royal Aero Club, and the Civil Aviation Authority. The association has registered schools across the country, where initial paragliding or hang gliding training must be undertaken. The BHPA was formed in 1992 by the merging of the British Hang Gliding Association and the British Association of Paragliding Clubs. Since then the sport has grown considerably, and now has over 60 affiliate