Bones and Joints: Upper Extremity Flashcards
4 regions of the upper extremity
Shoulder Girdle
Arm
Forearm
Hand
Bones of the shoulder girdle
Clavicle
Scapula
Bone of the arm
Humerus
Bones of the forearm
Radius
Ulna
Bones of the Hands
Carpals
Metacarpals
Phalanges
Bones of the carpals
scaphoid, lunate,
triquetral, pisiform, trapezium, trapezoid,
capitate, and hamate
Joint of the clavicle and scapula
Acromioclavicular joint
A long, slender bone that lies horizontally across the root of the neck just beneath the skin.
Clavicle
Articulations of clavicle
Sternum
1st costal cartilage medially acromion process of the scapula laterally
2 ends of clavicle
Sternal and Acromial
Weakest point of the clavicle
junction of the middle and outer thirds
A flat triangular bone that lies on the posterior chest wall between the 2nd and 7th ribs.
Scapula
3 borders of the Scapula
Superior
Medial
Lateral
3 angles of the Scapula
Superior
Inferior
Lateral
Thickest angle of the scapula
Lateral bone
Spine of the scapula divides:
Infraspinous fossa
Supraspinous fossa
Forms the subcutaneous point of the shoulder; Articulates with the acromial end of the clavicle
Acromion
Articulates with the head of the humerus; Smaller than the head of the humerus; Shallow, concave, oval fossa
Glenoid cavity
Superior to the glenoid cavity; Attachment for the coracoclavicular ligament
Coracoid process
Junction of medial two thirds and lateral third of the
superior border; Where the superior border joins the base of
coracoid process
Suprascapular notch
Anterior surface of the scapula
Subscapular fossa
T or F. Fractures of the scapula require little treatment because muscles adequately splint the fragments
True
Paralysis of the trapezius muscle
Dropped shoulder
Paralysis of the serratus anterior muscle
Winged scapula
Largest bone in the upper limb
Humerus
Articulations of the humerus
Scapula at the shoulder joint
Radius and Ulna at the elbow joint
Forms about one third of a sphere and articulates
with the glenoid cavity of the scapula
Head of the humerus
Most common site of fracture in Humerus
Shaft
Articulation with the head of the radius
Capitulum
Articulation with the trochlear notch of the ulna
Trochlea