Upper Extremity Joints Flashcards
What are the 3 Joints of the Pectoral Girdle?
Sternoclavicular
Acromioclavicular
Glenohumeral
Saddle type of synovial joint but functions as a ball and socket joint. It is the only articulation between the upper limb and axial skeleton.
Sternoclavicular Joint
What two ligaments reinforce the joint capsule of the Sternoclavicular Joint?
Anterior and Posterior Sternoclavicular Ligaments
What ligament attaches the sternal end of one clavicle to the stern end of the other clavicle?
Interclavicular Ligament
What ligament attaches the inferior surface of the sternal end of the clavicle to the 1st rib and its costal cartilage?
Costoclavicular Ligament
What two arteries supply the Sternoclavicular Joint?
Internal Thoracic Artery
Suprascapular Arteries
What nerve innervates the Sternoclavicular nerve?
Medial Supraclavicular Nerve
What arteries supply the Acromioclavicular Joint?
Suprascapular Artery
Thoracoacromial Arteries
What nerves innervate the Acromioclavicular Joint
Lateral Pectoral Nerve
Axillary Nerve
Ball and Socket type synovial joint where the hurl head articulates with the Glenoid cavity of the Scapula.
Glenohumeral Joint
Attached medially to the margin of the glenoid cavity and laterally to the anatomical neck of the humerus. It encloses the long head of the biceps brachii to the Supraglenoid tubercle of the Scapula.
Glenohumeral Joint Capsule
How many apertures does the Glenohumeral Joint have?
2
One aperture of the Glenohumeral Joint opens between the tubercles of the humerus, what passes through here?
Biceps Brachii Long Head Tendon
Soft fibrous tissue where the humeral head rests in the Glenoid Cavity and serves as an attachment site for several ligaments.
Glenoid Labrum
What ligament holds the tendon of the Biceps Brachii in place?
Coracohumeral Ligament
What ligament reinforces the anterior capsule of the Glenohumeral Joint and has three fibrous bands?
Glenohumeral Ligament
What are the four muscles of the rotator cuff?
(SITS)
Supraspinatus
Infraspinatus
Teres Minor
Subscapularis
What is the weakest point of the rotator cuff?
Inferior
(not stabilized by the muscles)
Protective structure between the acromion and coracoid process with the coracoacromial ligament spanning between them.
Coracoacromial Arch
Protective arch overlying the humeral head preventing superior displacement
Coracoacromial Ligament
What arteries supply the Coracoacromial Arch?
Anterior and Posterior Circumflex Humeral Artery
Suprascapular Artery
What 3 nerves innervate the Coracoacromial Arch?
Axillary Nerve
Suprascapular Nerve
Lateral Pectoral Nerves
Is the Capitullem of the Humerus on the lateral or medial side?
Lateral
What does the Capitullem articulate with?
Head of the Radius
What does the Trochlea of the Humerus articulate with?
Coronoid Process of the Ulna
U Shaped ligament that surrounds the head of the radius.
Annular Ligament
Common injury in young children where the radial head becomes dislocated. Possibly from playing or being picked up or pulled by the parent.
Nursemaid’s Elbow
