The Shoulder Flashcards
What is the difference between the pectoral girdle and the pelvic girdle?
Pectoral girdle is not a true joint
It does not connect fully like the pelvic girdle
It is mobility focused
What bones make up the Pectoral Girdle?
Clavicle
Scapula
What 5 joints and articulations that make up the pectoral girdle?
Sternoclavicular joint
Acromioclavicular joint
Glenohumeral joint
Scapulothoracic articulation
Subacromial articulation
Landmarks on the Clavicle?(7)
Acromial Facet
Sternal facet
Sternal articular surface
Impression of costoclavicular ligament
Groove for subclavius muscle
Conoid tubercle
Trapezoid line
Landmarks on the Scapula?(9)
Clavicular facet
Infraglenoid tubercle
Supraglenoid tubercle
Spine of scapula
Spinoglenoid notch
Infraspinous fossa
Glenoid fossa
Supraspinous fossa
Subscapular fossa
What ligaments are in the sternoclavicular (SC) joint? (4)
Anterior/Posterior SC
Inter/costoclavicular
Describe the structure and function of the Anterior Sternoclavicular joint
S: Broad fibrous band
F: Stabilises the SC joint
Describe the structure and function of the Posterior Sternoclavicular ligament ?
S: Weak fibrous band
F: Stabilises SC joint
Describe the structure and function of the Costoclavicular ligament?
S: Short, cone shaped
F: Stabilises SC joint
Describe the structure and function of the Interclavicular ligament?
S: Continuous with deep cervical fascia
F: Stabilises SC joint
What are the Muscles of the Scapula?(8)
Trapezius
Levator Scapulae
Rhomboids
Latissimus dorsi
Subclavius
Pec Minor
Serrated anterior
Pec Major
Bony landmarks on the humerus?(9)
Neck
Infra/Supra glenoid tubercle
Greater/Lesser tuberosity
Deltoid tuberosity
Radial groove
Intertubercle groove
Olecranon fossa
What are the Abductors at the Glenohumeral/Shoulder Joint?
Middle Deltoid
Supraspinatus
What are the adductors at the Glenohumeral/Shoulder Joint?(four)
Lats
Teres major
Coracobrachilais
Pec Major
What are the Flexors at the Glenohumeral/Shoulder Joint?(four)
Anterior Delt
Pec Major
Biceps brachii
Coracobrachialis
What are the Extensors at the Glenohumeral/Shoulder Joint?(three)
Posterior Delt
Lats
Long head of triceps brachii
What are the Medial/internal rotators at the Glenohumeral/Shoulder Joint?
Lats
Teres Major
Subscapularis
Pec Major
Anterior Delt
What are the External/Lateral rotators at the Glenohumeral/Shoulder Joint?(three)
Infraspinatus
Teres minor
Posterior Delt
What is the Function, Origin, Insertion and Innervation of the Teres minor ?
Function: Shoulder lateral rotation
Origin: Posterior aspect of the scapula
Insertion: Greater tubercle
Innervation: Axillary nerve
What is the Function, Origin, Insertion and Innervation of the Infraspinatus ?
Function: Shoulder lateral rotation
Origin: Infraspinous fossa
Insertion: Greater tubercle
Innervation: Suprascapular nerve
What is the Function, Origin, Insertion and Innervation of the Subscapularis ?
Function: Shoulder medial rotation
Origin: Subscapular
Insertion: Lesser tubercle
Innervation: Upper and lower subscapular nerve
What is the Function, Origin, Insertion and Innervation of the Long head of triceps brachii?
Function: Shoulder extension, elbow extension
Origin: Infraglenoid tubercle
Insertion: Olecranon of ulna
Innervation: Radial nerve
What is the Function, Origin, Insertion and Innervation of the Posterior deltoid ?
Function: Shoulder extension and lateral rotation
Origin: Spine of scapula
Insertion: Deltoid tuberosity
Innervation: Axillary nerve
What is the Function, Origin, Insertion and Innervation of the Biceps Brachii?
Function: Shoulder flexion, elbow flexion
Origin: Supraglenoid tubercle
Insertion: Radial tuberosity antebrachial fascia
Innervation: Musculocutaneous nerve
What is the Function, Origin, Insertion and Innervation of the Anterior Deltoid ?
Function: Shoulder flexion and medial rotation
Origin: Clavicle
Insertion: Deltoid tuberosity
Innervation: Axillary nerve
What is the Function, Origin, Insertion and Innervation of the Pec major?
Function: Shoulder adduction and medial rotation
Origin: Clavicular head
Insertion: Crest of greater tubercle
Innervation: Medial and Lateral pectoral nerve
What is the Function, Origin, Insertion and Innervation of the Coracobrachialis ?
Function: Shoulder adduction and flexion
Origin: Coracoid process
Insertion: Medial aspect of humerus
Innervation: Musculocutaneous nerve
What is the Function, Origin, Insertion and Innervation of the Teres major ?
Function: Shoulder adduction and medial rotation
Origin: Posterior, inferior angle of scapula
Insertion: Crest of lesser tubercle
Innervation: Lower subscapular nerve
What is the Function, Origin, Insertion and Innervation of the Lats?
Function: Shoulder adduction, medial rotation, extension
Origin: Vertebrae, ribs, iliac crest
Insertion: Floor of intertubercular groove of humerus
Innervation: Thoracodorsal nerve
What is the Function, Origin, Insertion and Innervation of the Supraspinatus ?
Function: Shoulder abduction
Origin: Supraspinous fossa of scapula
Insertion: Greater tuberosity of the humerus
Innervation: Suprascapular nerve
What is the Function, Origin, Insertion and Innervation of the Middle Deltoid ?
Function: Shoulder Abduction
Origin: Acromion
Insertion: Deltoid tuberosity
Innervation: Axillary nerve
What are the 4 muscles of the Rotator cuff?
Subscapularis
Infraspinatus
Teres minor
Supraspinatus
What is the function of the rotator cuff?
Rotator cuff prevents the sliding of the head of the humerus, allowing full range of motion (and shoulder mobility) aswell as providing stability.
