Upper Extremity Flashcards
What are the bone boundaries of the apex of the axill?
- A: Clavicle
- P: scapula
- M: first rib
What is the anterior border of the axilla?
- Pectoralis major
2. Pectoralis minor
What is the medial border of the axilla?
- Serratus anterius
2. Thoracic wall
What is the posterior border of the axilla?
- Axillary vein
- Axillary artery
- Brachial plexus
The axillary fascia is a prolongation of what fascia?
prevertebral fascia
What are the components of you rotator cuff muscle?
Supraspinatus
Infraspinatus
teres minor
Subscaplularis
What intrinsic muscle medially rotates the shoulder?
- subscapularis
2. Teres major
What intrinsic laterally rotates the shoulder?
I. Infraspinatus
2. Teres minor
What intrinsic ABducts the shoulder?
- supraspinatus
2. Deltoid
When the shoulder joint is fully abducted then a force tilts the humeral head downward, then inferior, the dislocation will be ___
anterior inferior
What is the most commonly involved muscle in rotator cuff tendinitis?
supraspinatus
What joint is associated with shoulder dislocation
Glenohumeral
Wha joint is damaged in shoulder separation
Acromioclavicular
What are the contents of the quadrangular space in your shoulder?
- Axillary nerve (circumflex)
2. Posterior circumflex humeral vessels
What are the boundaries of your quadrangular space
- S: Teres minor
- Medial: long head of triceps brachii
- I: Teres major
- L: Surgical neck of humerus
What nerve is commonly damaged in glenohumeral joint sdislocation?
Axillary nerve
What nerve can be damages in surgical neck fracture of the humerus?
Axillary nerve
What are the different compartments of the arm?
- Anterior
2. Posterior
What is the main action of the anterior compartment of the arm?
It is the main flexor
What is the innervation of the anterior compartment of the arm
Musculocutaneous nerve
What is the main flexor of the forearm?
brachialis
What is the main supinator of the arm?
biceps brachii
What are the components of your anterior forearm?
- Coracobrachialis
- Brachialis
- Biceps brachii
What are the contents of your posterior compartment of the arm?
- Triceps brachii
What is the main action of the posterior compartment of the arm?
extensor
What innervates the posterior compartment of the arm?
radial nerve
What are the components of your superficial forearm
- Pronator teres
- Palmaris longus
- FCR
- FCU
- FDS
- Intermediate group
What innervates the FCU?
Ulnar nerve
The flexors of the forearm are innervated by the median nerve except ___
- FCU
2. FDP
What are the components of the deep group of forearm flexors?
- FPL
- FDP
- Pronator quardatus
What muscles commonly originate in the medial epicondyle?
- Pronator teres (humeral head)
- FCR
- Palmaris longus
- FCU - humeral head
- FDS - humeroulnar head
What innervates your extensor muscles of the forearm?
Radial nerve
The common flexor tendon inserts in what epicondyle?
medial epicondyle
The common extensor tendon inserts in what epicondyle?
- lateral
What muscles originate in the lateral epicondyle?
- ECRB
- ED
- EDM
- ECU
- Aconeus
- Supinator
Golfer’s elbow is an inflammation of ___
medial epicondyle
What action precipitates medial epicondylitis?
repetitive flexion and pronation
What is affected in Tennis Elbow?
Lateral epicondyle
Tennis elbow is due to what repetitive motion?
Extension and flexion of the forearm at the elbow
What are the contents of the cubital fossa?
- Median nerve
- Brachial artery
- Biceps brachii
- Radial nerve
What are the borders of your cubital fossa?
- S: horizontal line connecting the epicondyles of the humerus
- L: brachioradialis
- I: Brachialis and supinator
- M: pronator teres
What are the components of your thenar muscles?
- APB
- FPB
- OP
AFO
What innervates the thenar muscles?
median nerve
What are your intrinsic muscles of the hand?
- Palmar interossei
- Dorsal interossei
PAD-DAB
The radial nerve innervates this muscle of the hand
- Extensor digitorum
What muscle flexes the hands at the MCP?
lumbricals
What innervates the medial lumbricales?
ulnar nerve
What innervates the lateral lumbricals
median nerve
What muscle flexes the PIP joint?
- Flexor digitorum superficialis
What innervates the flexor of the muscle at the PIP joint?
median nerve
What flexes the muscle at the DIP?
Flexor digitorum profundus
What innervates the FDP?
- Median
2,. Ulnar