Notesale: Turn your study into money

Document Preview

Extracts from the notes are below, to see the PDF you'll receive please use the links above

---

Pectoral Girdle
Scapula






Flat, large, triangular bone
Found on posterior aspect on Thoracic spine, overlaps 2nd to 7th rib
Hold in place by clavicle and muscles
Has three angles and three borders
Articulates with clavicle in acromioclavicular joint and humerus in
glenohumeral joint

o Costal surface = hollow and smooth, called subscapular fossa
o Dorsal surface = face posteriorly , divided by spine of scapula into
supraspinous fossa and infraspinous fossa (communicates via spinoglenoid
fossa)
 Spine of scapula has upper and lower boarders, forms acromion on lateral end
of sine
 Medial border of scapula = from inferior angle to superior angle
 Lateral border = from infraglenoid tubercle to inferior angle
 Superior border = on top of scapula
...
Has acromial
angle formed from lateral border of acromion and lower boarder of spine
 Medial border of acromion presents an oval facet for clavicle
 Coracoids process is hook=like projection which lies under clavicle
Palpation:
Inferior angle – 7th rib
Medial border
Spine of scapula – upper and lower border
Acromion process
Coracoid process – under clavicle

Clavicle





Subcutenious bone
Triangular in cross-section
Runns horizontally from sternum to acromion
Flattened lateral end, smooth superior surface; rough inferior surface and
anterior/posterior border to allow muscle attachment

o
o
o
o

Holds scapula laterally
Allow arms to be clear from the trunk
Transmit weight from upper limb (UL) to axial skeleton
Allow wide range of movement of UL

 Medial end articulates with clavicular notch of menubrium and costal cartilage
of first rib

---