AP Elbow ( Injured patient Patient position Seated at end & parallel to radiographic table with partially elbow flexed Part position Obtain tow AP projections one with forearm Parallel to cassette and on with humerus Parallel to cassette Center flexed elbow to cassette Central Ray Perpendicular Center Point To mid elbow joint Structures shown distal humerus & proximal ulna and radius Note: this position obtained if fracture or dislocation is suspected If elbow flexed near 90 degrees take the same With tube angulation degrees into elbow