Fractures: Shoulder and Upper Arm Flashcards
Most common type of proximal humerus #?
Surgical neck
How common are anatomical neck #?
Rare
When is there a risk of AVN in proximal humerus #?
Anatomical neck fractures displaced by >1cm
What is the most common humerus injury pattern in children?
Greenstick fracture through the surgical neck
Mx of impacted fractures of the surgical neck?
Collar and cuff (3 wks) -> physiotherapy
Mx of significantly displaced humeral fractures?
Open reduction and fixation OR intramedullary device
When do proximal humerus fractures often occur?
Low-energy fall in elderly
High-energy trauma in younger
How do proximal humerus fracture spresent?
Ecchymosis
Axillary nerve injury
supracondylar fractures of the hummerus are most commonly caused by?
FOOSH
typically in children
clinical features of a supracondylar humeral fracture?
elbow - semi-flexed with tenderness and swelling; classified as either extension or flexion type
local structure damage - brachial artery, median nerve, radial nerve
what is the most common type of elbow supracondylar fracture type?
extension type
what muscle is most likely to be affected in a midshaft humeral fracture?
brachioradialis as this is innervated by the radial nerve
why is the radial n. at risk in midshaft humeral fractures?
travels in spiral groove with profunda brachii artery
spiral groove is at the level of the humeral diaphysis
function of brachioradialis?
contributes to elbow function
innervation of brachioradialis?
radial n.
