Humerus Flashcards
What muscles attach to the greater tubercle
Supraspinatus
Infraspinatus
Teres minor
What muscles attaches to the lesser tubercle
Subscapularis
What is the deep depression between the greater and lesser tubercle called
Intertubercular sulcus/groove
What runs through the intertubercular sulcus
Long head of biceps brachii
What attaches to the edges of the intertubercular sulcus
Tendons of:-
Pectoralis major
Teres major
Latissimus dorsi
What neurovascular structures are at risk in a surgical neck of humerus fracture
Axillary nerve
Posterior circumflex artery
What does axillary nerve damage cause
Paralysis to deltoid and teres minor
Difficult abduction
Impaired sensation over regimental badge area
What structures run through the radial groove
Radial nerve
Profunda brachii artery
Which muscles attach to the humerus anteriorly
Coracobrachialis
Deltoid
Brachialis
Brachioradialis
Which muscles attach to the humerus posteriorly
Medial and lateral heads of triceps
What structures can be damaged in a mid-shaft humeral fracture
Radial nerve
Profunda brachii artery
What muscle group is innervated by the radial nerve
Extensors of the wrist
What does damage to the radial nerve cause
Wrist drop - unopposed flexion of the wrist
Sensory loss over dorsal surface of hand
Where does the ulnar nerve pass into the forearm
Along the posterior side of the medial epicondyle
Which part of the humerus articulates with the radius
Capitulum
