Upper Limb - SC/AC/GH Flashcards
What type of joint is the Sternoclavicular Joint
Saddle shaped synovial joint
What is the blood supply of the SC joint?
Internal thoracic and suprascapular arteries
What Ligament prevents elevation of the clavicle at the SC joint?
The Costoclavicular ligament
What lymph nodes are associated with SC joint?
Lower deep cervical lymph nodes (supraclavicular nodes) + axillary nodes
Innervation of SC joint?
Medial supraclavicular nerve (C3,C4) + subclavius (C5,C6)
Ligaments of SC joint? (4)
Anterior/posterior sternoclavicular
Interclavicular
Costoclavicular
What are the principle stabilizers of the AC joint? (2 ligaments)
Coracoclavicular ligament:
Conoid + trapezoid ligament
What action does the Conoid ligament prevent?
Forward movement
What motion forms the trapezoid ligament prevent?
Backwards movement
Blood supply of AC joint?
Suprascapular branch of subclavian artery
Thoracoacromial trunk
Blood drainage of AC joint?
External Jugular + axillary veins
Lymph nodes of AC joint?
Apical group of axillary lymph nodes
Innervation of the AC joint?
Supraclavicular, lateral pectoral, suprascapular, axillary (C4,C5,C6)
What type of joint is the AC joint?
Synovial plane joint
What is the articulation of the scapulothoracic joint?
Bone-muscle-bone articulation
What movements occur at Scapulothoracic joint?
Protraction-retraction
Elevation-depression
Rotation medial lateral
What type of joint is glenohumeral joint?
Multiaxial ball and socket
What aspect of the GH joint is the weakest?
Inferior potion
What ligament runs transversely across biceps groove, holding biceps tendon down?
transverse humeral ligament
What are the main supporting tendons/ligament of the GH joint?
Glenohumeral ligament(Sup. Post. Infer.) Coracohumeral ligament rotator cuff tendons
What bursa are found in the GH joint? (3)
Subscapular bursa
Infraspinatus bursa
Subacromial bursa
What deepens/strengthens and increases congruency of the GH joint?
Glenoid Labrum
What are the 6 ligaments of the shoulder?
GH Ligament (sup. Post. Infer.)
Coracohumeral ligament
Transverse humeral ligament
Coracoacromial Ligament
What arteries supply the GH joint ?(3)
1) Suprascapular branch of subclavian artery
2) Acromial branch of thoracoacromial artery
3) Branches from ant.post. Circumflex humeral arteries
