Chapter 90 - Proximal Humerus Fractures Flashcards
1
Q
vascular viability of the humeral head is optimized by what?
A
at least 8mm of the posteromedial calcar remaining intact
2
Q
closed reduction and perc pinning of proximal humerus fracture is primarily indicated in what patient group?
A
peds
3
Q
contraindications for closed reduction perc pinning?
A
- fracture dislocations
- physeal involvement
- metaphyseal comminution
- head split fx
- severe osteoporosis
4
Q
ideal location of the proximal humerus locking plate
A
- lateral to the bicepital groove
distal to the rotator cuff insertion (decreased acromial impingement, ideal location for kickstand screw)
5
Q
dissection distal and posterior to the deltoid puts what at risk?
A
radial nerve
6
Q
most common pattern of malunion for proximal humerus fractures
A
varus, apex anterior
7
Q
post traumatic osteonecrosis
A
increased incidence with four part fractures, <8mm calcar, fracture dislocations
