Lecture: Posterior Scapular Region and Posterior Arm

how do the scapula and humerus articulate

glenoid cavity of the scapula + head of the humerus

glenohumeral joint type

ball and socket

what muscles support the glenohumeral joint

rotator cuff muscles

long head of biceps brachii

what makes up the pectoral girdle

clavicle and scapula

list the rotator cuff muscles

supraspinatus

infraspinatus

teres minor

subscapularis

impact of supraspinatus injury

pain lifting arm over head

pain with initiating abduction

symptoms of infraspinatus injury

pain with lateral rotation

pain with throwing, reaching behind, opening doors

symptoms of teres minor injury

pain with lateral rotation

pain with throwing

which rotator cuff muscles are involved in throwing objects

infraspinatus and teres minor

subscapularis function

medial rotation

boundaries of the quadrangle space

inferior margin of teres minor

surgical neck of the humereus

superior margin of teres major

lateral margin of the long head of the triceps brachii

what passes through the quadrangle space

axillary nerve and the posterior circumflex humeral artery and vein

boundaries of the triangular space

• the medial margin of the long head of triceps brachii,

  the superior margin of the teres major, and

  the inferior margin of the teres minor.

__ passes through the triangular space

circumflex scapular artery

triangular interval formed by:

the lateral margin of the long head of triceps brachii,

shaft of the humerus

inferior margin of teres major

triangular interval signficance

serves as a passageway between the anterior and posterior compartments of the arm and between the posterior compartment of the arm and the axilla

main nerves of the posterior scapular region

suprascapular

axillary

how does the suprascapular nerve reach the posterior scapula

suprascapular foramen

arteries of the posterior scapular region

suprascapular

posterior circumflex humeral

circumflex humeral