Trauma

Question 1

When to consider treating closed humeral shaft fractures operatively…

Answer 1

When patients had no callus formation and motion at 6 weeks, they are likely to proceed to nonunion and should be managed with ORIF. IMN has higher complication rate.

Question 2

Class 3 shock is indicated by…

Answer 2

Hemodynamically unstable, need blood product.

Question 3

SIRS criteria

Question 4

SIRS criteria

Question 5

Order of recovery for high radial nerve palsy…

Question 6

First branch of the internal iliac artery?

Answer 6

Superior gluteal artery

Question 7

Pelvic ring injury - what artery is most commonly injured…
APC and vertical shear?
Lateral compression?

Answer 7

Superior gluteal artery
Obturator artery

Question 8

Extension of intertrochanteric fractures _____ below the lesser trochanter can be safely treated with short IMN.

Answer 8

4cm
>4cm need long nail

Question 9

70% or radial nerve palsy’s recover by….

Answer 9

7 weeks

Question 10

What view is needed for AP placement of anterior column screw for pelvic ring injury?

Answer 10

Iliac oblique

Question 11

View needed for superior inferior view of anterior column pelvic screw?

Answer 11

Obturator outlet

Question 12

Elementary acetabular types

Answer 12

Posterior wall
Posterior column
Anterior wall
Anterior column
Transverse (involves both columns)

Question 13

Associated acetabular fractures

Answer 13

-Both column (spur sign)
-Anterior column with posterior hemitransverse (elderly)
-T type
-Posterior column posterior wall
-Transverse posterior wall

Question 14

Acetabular fracture patterns treated via posterior approach

Answer 14

Posterior column
Posterior wall
Posterior column + posterior wall
*Transverse posterior wall
Some transverse and T patterns

Question 15

Acetabular fracture patterns treated via anterior approaches (ilioinguinal, stoppa)

Answer 15

Anterior column
Anterior wall
Anterior column posterior hemitransverse
Both column
Some transverse and T patterns

Question 16

When is an extended iliofemoral approach needed for acetabular fracture treatment?

Answer 16

Complex patterns with anterior and posterior displacement

*can also do combined approach instead of iliofemoral

Question 17

Dynamic stress test of posterior walll acetabular fractures is done on this view?

Answer 17

Obturator oblique

Question 18

Minimum lateral wall thickness for intertroch fracture to do sliding hip screw?

Answer 18

20.5mm

Question 19

Using the FRAX calculator tool, at what 10 year risk of hip fracture and/or what overall 10 year risk of fracture (any) are the cutoffs for initiating bone health treatment?

Answer 19

3% hip
20% overall

Question 20

For femoral shaft fractures what is an acceptable degree of malrotation?

Answer 20

<15 deg

Question 21

How do you calculate femoral rotational malalignment after IMN?

Answer 21

Hip - knee

Question 22

How do you calculate femoral rotational malalignment after IMN?

Answer 22

Version of hip - knee
+ = anteversion
- = retroversion

Question 23

Open distal femur fractures have a high incidence of…

Answer 23

Hoffa fragment

Question 24

What surgical factors optimize secondary bone healing principle in metaphyseal distal femur fractures?

Answer 24

Long working length
Longer plates
Titanium plate
Non locking Cortical screws in the shaft
Far cortical locking screws

Question 25

Blocking screws are always place at this location of the deformity?

Answer 25

Concavity

Question 26

Osteogenic definition

Answer 26

Bone graft that provides cells that can produce bone

Question 27

Osteoinductive definition

Answer 27

Stimulate bone growth and stem cell differentiation

Question 28

Osteoconductive definition

Answer 28

Create scaffold or structural framework for bone