Upper limb Flashcards
What happens to the radius and ulna during supination and pronation
Radius move over ulna during pronation
What are the 3 factors that stabilise the joints
Congruency - how well the joint fits in the articulating bone
Muscle tone
ligaments
Name A-H
A- trapezius
B- latissimus dorsi
C- levator scapulae
D- rhomboid minor
E- deltoid
F- Infraspinatus
G- Teres major
H- rhomboid major
Flexion of the shoulder is performed by
pectoralis major
anterior deltoid
coracobrachialis
biceps brachii weakly assists
Adduction of the shoulder is performed by
Pectoralis major
Latissimus dorsi
Teres major
Extension of the shoulder is performed by
Latissimus dorsi
Teres major
Posterior deltoid
Abduction of the shoulder is performed by
Deltoid muscle
Supraspinatus
What needs to occur for the full abduction of the shoulder
the scapula must rotate so that the glenoid fossa faces more superiorly
This prevents greater tubercle of the humerus from impinging on the acromion
What needs to occur for the full adduction of the shoulder
The scapula must rotate so that the glenoid fossa faces more inferiorly
Innervation of latissimus dorsi
Thoracodorsal nerve
Function of latissimus dorsi
Extension of the shoulder
Adduction of the shoulder
Innervation of rhomboid major and minor
Dorsal scapular nerve
Function of rhomboid major and minor
Retract the scapula
Innervation of trapezius
CN XI - Accessory nerve
Function of the trapezius
elevate the scapula and rotates it during abduction of the arm (to abduct the arm fully, scapula needs to rotate)
Retract the scapula
Pull the scapula inferiorly
Name A-F
A- deltoid muscle
B- Teres major
C- serratus anterior
D- latissimus dorsi
E- pectoralis minor
F- Pectoralis major
Innervation of deltoid muscle
Axillary nerve
Function of deltoid muscle
Abduction 15-90 degrees (0-15 is by suprasinatus)
Flexion and extension of the shoulder
Which muscle fibres of the deltoid is for abduction of the shoulder
Middle fibres
Which muscle fibres of the deltoid is for flexion and extension of the shoulder
Flexion - anterior
Extension - posterior
Innervation of teres major
Lower subscapular nerve
Innervation of pectoralis major and minor
Major - medial and lateral pectoral nerves
Minor - medial pectoral nerve
innervation of serratus anterior
Long thoracic nerve
Name A-J
Name A-D
Where do the rotator cuff muscles insert onto
All insert onto greater tuberosity of the humerus EXCEPT subscapularis
Subscapularis - lesser tuberosity of humerus
Function of supraspinatus
Holds the humeral head in glenoid fossa
Initiation of Abduction
Innervation of supraspinatus
suprascapular nerve
Which muscle fibres of the deltoid is for flexion and extension of the shoulder
Flexion - anterior
Extension - posterior
Function of infraspinatus
Holds the humeral head in glenoid fossa
Lateral rotation of the arm
Innervation of infraspinatus
suprascapular nerve
Function of teres minor
Holds the humeral head in glenoid fossa
Lateral rotation of the arm
Innervation of teres minor
Axillary nerve
Function of subscapularis
Holds the humeral head in glenoid fossa
Medial rotation of the arm
Innervation of subscapularis
Upper and lower subscapular nerves
Impingement syndrome most commonly affects ______ and causes ______
Most commonly affects supraspinatus
Causes painful arc between 60-120 degrees
Name the bursa of the shoulder
Subscapular bursa
Subacromial bursa
Subcoracoid bursa
Subdeltoid bursa
Name A-M
Which bursa is the most commonly inflamed
Subacromial bursa
What are the ligaments of the shoulder joint
Glenohumeral ligament
Coracohumeral ligament
Coracoacromial ligament
Transverse humeral ligament