Radius ·Upper end: head of radius neck of radius radial tuberosity radius. Shaft:interosseous border ·Lower end: radial styloid process ulnar notch carpal articular surface Radial Styloid Radius • Upper end: head of radius neck of radius radial tuberosity • Shaft：interosseous border • Lower end: radial styloid process ulnar notch carpal articular surface Radial Styloid radius