Radius (Radius), Ulna (Ulna)

head of the radius

articulates with capitulum of humerus

neck of the radius

narrowed region immediately distal to the head of the radius

radial tuberosity

roughened area for the insertion of biceps brachii

interosseous membrane

connects radius and ulna along their entire length

styloid process of the radius

pointed projection located on the lateral end of the distal radius

olecranon of the ulna

Projection on the proximal end of the ulna, superior to the trochlear notch

trochlear notch of the ulna

articulates with trochlea of humerus

coronoid process of the ulna

inferior to the trochlear notch on the ulna

radial notch of the ulna

small proximal lateral notch that articulates with the head of the radius; forms part of the proximal radioulnar joint

styloid process of the ulna

pointed projection located on the lateral end of the distal ulna