upper extremity squirm

Question 1

Classification of clavicle fractures that are lateral third?

Answer 1

Allman
Group 2 type 2 is operative
1. lateral to conoid
2a is medial to conoid and trapezoid so displaced
2b is torn conoid
3 is intraarticular into joint and table. arthritis risk

Question 2

Type IV and V A/c separation

Answer 2

4 is posterior and into trap.. V is more than 100% with displacement, skin tenting
VI is conjoined tendon

Question 3

Compartment syndrome sign for scapula?

Answer 3

Comolli sign

Question 4

Corocoid classifcaion

Answer 4

1 is proximal to cozrococlavicular ligament, 2 is TIP

Question 5

Glenoid classification

Answer 5

Ideberg
1a anterior rim, 1b posterior rim
2 is inferior/lateral
3 is superior
4 is medial exit fracture
5 is mix
6 is comminuted

Question 6

OR for glenoid when?

Answer 6

25% or more involvement or 5 MM step off. CONSIDER 3d econ

Question 7

When do you operate on scapula neck?

Answer 7

40 degrees translated

Question 8

Acromion fracture classification

Answer 8

1 nondisplaced
2 opening of subacromial space
3 closure of space. THREE IS OPERATIVE

Question 9

Classification of scapulothoracic dissassocation

Answer 9

Mild medium hot. 1 cm neuro intact. 2 a vascular 2 b neuro issue 3 is both neuromuscular out

Question 10

HAGL? Bankhart? Hillsachs? Who gets rotator cuff tear? What is hillsachs view

Answer 10

Humeral avulsion of glenohumeral ligaments.

labral tear, or fracture of glenoid if bony, hillsachs is humeral head fracture.

Hilsachs view is internal rotation to see posteriolateral cortex

Question 11

blood supply humeral head

Answer 11

Used to say anterior circumflex to arcuate, but now say posterior humeral circumflex contributes a lot

Question 12

parts of humerus definition

Answer 12

45 degree angle or 1 cm separation unless greater tuberosity and it is 5 mm.

Lesser tuberosity: assume posterior dislocation until proven otherwise.

Question 13

Proximal humerus malunion classification

Answer 13

2 classifications

Beredjiklian
1. tuberosity off 1 cm
articular surface incongruent
3 articular surface malalignmed

boileau
1 necrosis or impaction
2 chronic dislocation
3 surgical neck nonunion
4 malunion of tuberosity is SEVERE

Question 14

Where is radial nerve?

Answer 14

14 cm from lateral epicondyle, 20 from medial

Question 15

Acceptable humerus shaft allignment

Answer 15

20 degrees ap, 30 varus/valgus and 3 cm shortening

Nonunion risk increaesed in proximal third

Question 16

Distal humerus intercondylar fracture classification

Answer 16

Risenburg

1 non displaced
II slight displacement without rotation
III rotated
IV severe comminution

Tx is ORIF or Bag of Bones

Question 17

AO distal humerus classiation

Answer 17

A extreaarticular
B single column
C both column

Question 18

What is concern of Jupiter H type?

Answer 18

Trochlea at risk of AVN (Jupiter is 2 column distal humerus fractures)

Question 19

Olecrenon schatzker

Answer 19

transverse
transverse with dip
oblique
comminuted
oblique distal
Comminuted?

Question 20

Radial head classification

Answer 20

Mason - 4 types
Nondislaced
angulatedmight block
III comminuted and blocked
4 with a dislocation

fun fact LCL injured with 80% of them

Question 21

OR for radial head?

Answer 21

2 mm displaced of 25% of articular surface

Question 22

Insertion of mcl most important bundle?

Answer 22

Anterior bundle on sublime tubercle (Anterior medial facet of coronoid

Question 23

LUCL insertion

Answer 23

tends to avuse off of lateral epicondyle. It inserts on supinator crest

Question 24

Monteggia classification

Answer 24

Bado:
1 anterior in kids commonly
2 posterior dislocato (subclassifications from proximal to far).
2 a is coronoid level. B is metaphysical junction. C is distal coronoid, D is distal half of ulna
3 is laterally
4 is both bone FF with radial head dislocation

Question 25

Nerve with monteggia?

Answer 25

PIN

Question 26

5 ligaments of IOM?

Answer 26

Central band is key. Accessory, distal oblique, proximal oblique, dorsal oblique accessory cord

Question 27

When can you cast ulna?

Answer 27

Distal 2/3. 50% overlap and less than 10% displacement

Question 28

DRUJ suspicion of

Answer 28

5 mm shortening, ulnar styloid avulsion, subluxation on XR or wide AP space on AP