Pin Pointing Pain - Lateral Arm and Shoulder

Anterior muscles
 

 Scalene_muscle.png

Scalene pg 253
Origin - transverse processes of third through sixth cervical vertebrae (anterior tubercles)
Insertion - first rib
Movement - Unilateraly: with the ribs fixed, laterally flex the head and neck to the same side, rotate head and neck to the opposite side
Bilaterally: elevate the ribs during inhalation
Flex the head and neck
Nerve cervical and brachial plexuses



biceps.jpg
Biceps brachii pg 103
Origin-  short head: coracoid process of scapula long head: supraglenoid tubercle of scapula
Insertion- tuberosity of the radius and aponeurosis of the biceps brachii
Movement - flex the elbow
Joint - humeroulnar
Movement - supinate the forearm
Joint - radioulnar
Movement - flex the shoulder
Joint glenohumeral
Nerve Musculocutaneous

 


Brachialis.png
Brachialis pg 140
Origin - distal half of anterior surface of humerus
Insertion- tuberosity and coronoid process of ulna
Movement - flex the elbow
Joint - humeroulnar
Nerve - musculocutaneous 







Lateral muscle

Deltoid.png


Deltoid pg 75
Origin- lateral one-third of clavicle, acromion and spine of scapula
Insertion- deltoid tuberosity
Movement - abduct, flex, medially rotate, horizonntally adduct the shoulder
Joint - glenohumeral 
 

 

Posterior muscles

 

Supraspinatus.png

Supraspinatus pg 83
Orinin- supraspinous fossa of the scapula
Insertion - greater tubercle of the humerus
Movement - abduct the shoulder, stabilize head of humerus in glenoid cavity
Joint - glenohumeral
Nerve - suprascapular

 

 

 

 

m_-_Infraspinatus.pngInfraspinatus pg 82
Orinin- infraspinous fossa of the scapula
Insertion- greater tubercle of the humerus
Movement - laterally rotate, adduct, extend, horizontally abduct and stabilize head of hurmerus in glenoid cavity
Joint - glenohumeral
Nerve - suprascapular

 

 

 

 

m_-Triceps_brachii.pngTriceps pg 105
Origin- long head: infraglenoid tubercle of the scapula Lateral head: posterior surface of proximal half of the humerus Medial head: posterior surface of distal half of the humerus
Insertion- olecranon process of the ulna
Movement  all three heads - extend the elbow 
Joint - humeroulnar
Movement - long head: extend and adducts the shoulder
Joint - glenohumeral
Nerve