FOUNDATIONS 1 DAY 1 EXAM PREP

The USF depth gauge can't be disasembled true or false

FALSE

A single black band on a unviersal small frag drill guide indicates what?

It accepts a 2.5 mm drill for. a 3.5 mm screw.

The following function of plating provides relative stability and is only one that does.

Bridge

What make up the basic 5?

Mini, small and large frag (3 trays)

What does the "LC" stand for in lc-dcp?

It stands for Limited contact dynamic compression plating

A lag screw achieves both absolute and relative stability? TRUE or FALSE?

False

Tapping for lag by technique is mandatory true or false?

FALSE

Name steps in order for a 3.5 lag

1. overdrill 3.5 drill 2. under drill with 2.5 drill. 3. countersink.

4. meausre 5. tap. 6. screw in.

Why do you tap after measure?

So we don't ruin the threads.

Why do we countersink before we measure?

To get proper measurement!

Name the 5 functions of plates:

1. Compression 2. Neutralization 3. Buttress 4 Bridge 5. Tension Band

What order do you place screws when you lag LOOK AT IMAGE U HAVE?

C,A,B (basicallytop of fracture where it poitns you put a screw on that side first then other then lag the other way across fracture.

Where is lister's tubercle located?

On the dorsal side of the distal radius.

Where is the watershed line located?

The volar side of the distal radius.

Where can 1.8 VA butress pins be used in the distal radius?

In the distal holes / the head of the distal radius system NOT in the proximal holes/ the shaft.

The most common plate in distal radius set is ?

2.4 mm VA-LCP 2 column volar distal radius plate.

True or false Distal radius is the most common fracture in ortho?

True

Where do you place distal radius plate?

Proximal to the water shed line and only way to check is a lateral view.

Name the THREE COLUMN THEORY

Radial, intermediate, and ulnar column.

Explain the dorsal approach for distal radius plating:

Two plate technique. Rounded surface, buttress the radial and intermediate columns. 70-90% ANGLE.

Explain the volar approach:

90% common. Flat surface, one plate, less irritating. Not alot of tissue around.

Distal radius ex fix tools are part of which ex fix?

Medium ex fix. Gold 4.0 clamps. Self drill shanz. 8 MM CARBON FIBER RODS. 200,220,240mm.

Reducing fracture degrees .

11 degree volar tilt. 11 mm radial height . 22 degree radial inclination. 10 degree dorsal tilt and 20 degree lateral inclination.

screws spanning 75% of bicortical lenght have similar stability to what percentage screws.

screws spanning 100%

X ray carpal fossa view has view of the 2 fossas named:

Lunated and Scaphoid. Looks like italian gesture.

True or false locking screw has to be finished by hand with a torque limiter

TRUE

RADIAL preload is what ?

create stability and reduce pin loosening.

tesion banding is what?

lateral side in tension medial is weight bearing.

TFNA distal locking options in the short and long?

short 1, long 3

When fracture goes in joint we go ____ stability?

Absolute

How do you increase stiffness in ex fix pins and bars

Pins larger and more, bars more and farther apart.

What procedure releases pressure?

Fasciotomy

What are the 4 AO principles in order?

1. Fracture reduction

2. Fracture fixation

3. Preservation of blood supply

4. Early and safe mobility

Explain spherical gliding principle?

Drill accentrically, push screw down and pull plate to compress.

Im nails provide what stability?

Relative stability.

Common complications of EX FIX

Infection, and Pin loosening

How many IM nails do we have total?

9 total not discontinued or pedi

Double black band color and single band color in USF mean what?

Double is 3.5 drill. single is the 2.5 underdrill.

black is what mm and orange is what mm

black 3.5mm orange 2.7 mm

When measuring 2.7 mm locking/VA in USF you subtract 2 mm

Can measure off anything except w3hat ____ because all other are callibrated?

THE CONE