Osteology of the Upper Extremity Flashcards

Vocabulary flashcards covering the anatomy, landmarks, and clinical considerations of the upper extremity bones based on the lecture notes.

Superior appendicular skeleton

Formed by the pectoral girdle and the bones of the upper limb.

Sternoclavicular joint

The only articulation where the upper appendicular skeleton connects to the axial skeleton.

Scapula fracture

Usually involves the subcutaneous acromion and is often related to pedestrian-vehicle accidents.

Clavicle

A long bone with no medullary (marrow) cavity consisting of spongy bone and a compact shell.

Neurovascular bundle

A structure supplied to the upper extremity that is protected by the clavicle.

Ulna

The medial and longer stabilizing bone of the forearm.

Olecranon

The posterior landmark found on the proximal end of the ulna.

Coronoid

The anterior landmark found on the proximal end of the ulna.

Radius

The lateral and shorter bone of the forearm with its head located at the proximal end.

Proximal row of carpal bones

A group of four carpal bones consisting of the scaphoid, lunate, triquetrum, and pisiform.

Distal row of carpal bones

A group of four carpal bones consisting of the trapezium, trapezoid, capitate, and hamate.

Metacarpal bones

Numbered $I-V$ from thumb to pinky, each consisting of a proximal base, a shaft, and a distal head.

Phalanges II-V

Fingers that consist of three parts: proximal, middle, and distal phalanges.

Scaphoid fracture

A common wrist injury resulting from landing on an outstretched hand, notorious for poor blood supply and potential complications.