FINAL EXAM of Humerus, Radius, and Ulna Anatomy

Humeral Head

Proximal end of the humerus, articulates with scapula.

Anatomical Neck

Region between the humeral head and greater tubercle.

Surgical Neck

Common fracture site below the humeral head.

Greater Tubercle

Lateral projection for muscle attachment on humerus.

Lesser Tubercle

Medial projection for muscle attachment on humerus.

Deltoid Tuberosity

Roughened area on humerus for deltoid muscle attachment.

intertubercular groove

Olecranon Fossa

Posterior depression for olecranon of ulna.

Capitulum

Rounded lateral condyle of humerus for radius.

Trochlea

Medial condyle of humerus for ulna articulation.

Lateral Epicondyle

Projection on humerus for lateral muscle attachment.

Medial Epicondyle

Projection on humerus for medial muscle attachment.

Radial Head

Proximal end of radius, articulates with humerus.

Radial Neck

Narrow region below the radial head.

Ulnar Notch

Medial indentation on radius for ulna articulation.

Radial Styloid Process

Distal projection of radius, stabilizes wrist.

Trochlear Notch

C-shaped notch on ulna for humeral articulation.

Olecranon Process

Posterior projection of ulna, forms elbow.

Coronoid Process

Anterior projection of ulna, fits into humerus.

Radial Notch

Lateral notch on ulna for radius articulation.

Interosseous Border

Edge of ulna for interosseous membrane attachment.

Ulnar Head

Distal end of ulna, articulates with wrist.

Ulnar Styloid Process

Distal projection of ulna, stabilizes wrist.

Scapula

Shoulder blade, connects humerus to thorax.

olecranon fossa

located on the posterior side of the distal end of the humerus superior to the trochlea and articulates with the olecranon process of the ulna

Humerus

upper arm bone, largest bone in upper limb

how many ossification does humerus have

9

Humerus articulates with.....

Proxmially with scapula, Disto-laterally with radius, disto-medially with ulna

Radius

shortest of 3 arm bones, named for its action creating a turning movement around capitulum of the humerus

how many ossifications does radius have

3

Ulna

longest thinnest bone of forearm, with U shape proximal articulation and distal articulation provides freer rotation of hand

how many ossifications does ulna have

3

What kind of joint is elbow (humerus, radius, ulna

hinge joint

What kind of joint is shoulder(scapula,humerus

ball and socket