Upper Extremities Part 1 Flashcards
Axillary fascia
- lateral prolongation of the prevertebral fascia and extend up to the elbow
- contents: axillary artery and vein, brachial plexus
Brachial nerve plexus block
Syringe needle is inserted into the proximal part of the sheath
Position verified by feeling the pulsations of the THIRD PART of the axillary artery
Rotator cuff muscle
Supraspinatus
Infraspinatus
Teres inor
Subscapularis
Nerve supply of shoulder muscles
Supraspinatus - suprascapular n Infraspinatus - suprascapular n Teres minor - axillary n Subscapularis - upper subscapular n Deltoid - axillary n Teres major - lower subscapular n
Actions of the shoulder muscles
Supraspinatus - abductor Infraspinatus - lateral rotattor Teres minor - lateral rotator Subscapularis - medial rotator Deltoid - abductor Teres major - medial rotator
Most commonly inflammed rotator cuff muscel
Tendon of supraspinatus muscle
A severe blow on the point of the should can result to clinical condition called as “SHOULDER SEPARATION”. This is a result of dislocation of which joint?
Acromioclavicular joint
(Clavicle is torn away from the end of acromion
Vs shoulder dislocation
-displacement of the bones of the glenohumeral joint
Dorsal scapular spaces
Quadrangular space
Triangular space
Quadrangular space boundaries
Above - teres minor
Below - teres major
Medial - long head of triceps brachii
Lateral - surgical neck of humerus
Quadrangular space contents
Axillary nerve (CIRCUMFLEX ENRVE) Posterior circumflex humeral vessels)
Triangular space boundaries
S: teres minor
I: teres major
L: long head of triceps brachii
Triangular space content
Circumflex scapular vessles
Axillary nerve injury
During glenohumeral joint discolation.
Axillary nerve locted within the quadrangular space, lies inferior to the humeral head, and winds around the surgical neck of the humerus
= flattend shoulder, loss of sensation at the lateral side of the proximal part of the arm
