Fractures of the coronoid rarely occur in isolation. They usually occur in combination with a radial head fracture, a dislocation of the elbow, or both (terrible triad of the elbow).Large coronoid fractures often are associated with persistent elbow instability even after reduction of the dislocation.
Hydrothermal Vents. Measurement of tectonic plate movements. The amount of tectonic plate movement is measured using Global Positioning System (GPS) satellites and a network of GPS receivers. This technology allows scientists to measure plate movements as small as a few millimeters per year. click here to plot REAL-TIME data and visualize tectonic plate movement.
Because flexibility is joint specific, determining the range of motion of a few joints does not necessarily provide an indicator of flexibility in other joints. The most accurate tests of flexibility are those in which a goniometer is used to measure the actual degrees of rotation of the various joints. A goniometer is a protractor type of instrument used to measure the joint angle at both extremes in the total range of movement. The double armed goniometer has two arms that attach to two body parts, with the center (fulcrum) of the instrument over the exact center of the joint tested (ACSM 2010b).