Meta Nail

Question 0

The design rational

Answer 0

Respect anatomy with specific implants

Increase stability with advanced locking solutions

Offer fracture compression through the nail

Question 1

Designed to address :

Answer 1

Issues associated with metaphysical fractures

*expands the fracture types you can fix

Question 2

Meta tibia nail specs

Answer 2

10 degree herzog curve
2 degree distal bend
4 proximal holes
3 distal holes

Question 3

Meta tibia nail sizes and lengths

Answer 3

Proximal diameter 12mm (8.5,10,11.5)
-13mm for 13

Lengths: 16-50cm

Question 4

What are the color codes for meta tibia nail?

Answer 4

Grey for 8.5mm

Gold for 10,11.5,12mm

Question 5

What are the planes in the proximal locking holes in tibia nail?

Answer 5

25 and 45 degrees

Question 6

How many holes proximally and the options in tibia nail?

Answer 6

Within 40mm
1 compression slot
3 threaded holes (1 poly bushing)

Question 7

How many holes are there distally and the options in the tibia nail?

Answer 7

2 medial lateral
1 anterior posterior

Most distal ML hole is threaded to prevent wagging-5mm from the tip

Question 8

What is the starting point for a tibia nail?

Answer 8

High on the tibia at the edge of the plateau

Just medial to the lateral tibial spine

In line with the anterior cortex

Question 9

Why is the starting point on the tibia so important? Too lateral? Too medial? Too distal?

Answer 9

Relatively lateral position “lines up” with the tibial diaphysis

Too medial-valgus
Too lateral-varus
Too distal-anterior hyper flexion, posterior translation

Question 10

META-NAIL retrograde femoral nail specs

Answer 10

2.0mm AP bow

No herzog bend-excellent entry point

Question 11

Retrograde femoral nail sizes and lengths

Answer 11

Proximal/driving end diameter 12mm (10,11.5)
13 for 13

Lengths: 18-50cm

Question 12

What is the color code for retrograde femoral nails?

Answer 12

Gold

Question 13

What are the proximal locking options in retrograde femoral nail?

Answer 13

2 static AP holes
No dynamization
No threads or bushings

Use sure shot is possible

Question 14

What are the distal locking options in the retrograde femoral nail?

Answer 14

3 options within 40mm
All threaded 
Top 2 with poly bushings 
Multiplayer 25 degrees 
Most distal screw locks with nail cap set screw

Question 15

What is the starting point for the retrograde femoral nail?

Answer 15

Centered or slightly medial in the intracondylar notch

Anterior to the femoral attachment of the PCL

Guide pin must be anterior to blumensaats line

In line with the shaft

Question 16

Why is the starting point on the retrograde femoral nail so important ?

Answer 16

Reduce potential for angular deformity

Major concern is the joint surface

Nail must be countersunk 5-10mm or it will invade structures inside the joint

Question 17

What approach is used with a standard drill guide?

Answer 17

Percutaneous for tibia or retrograde femur

For fracture compression

Question 18

Semi extended guide use?

Answer 18

With tibias only

No quad pull

Question 19

How many mm of compression can you get with the tibia nail?

Answer 19

Up to 7mm with the compression driver through the guide

Question 20

What are the color codes for the radiolucent anterior drop?

Answer 20

Femur
Tibia
Knee

Question 21

How far is the herzog Bend in the nail from the tibia ?

Answer 21

27mm on the concave side

35mm on the convex side

Question 22

How far is the most distal screw from the tip of the tibia nail? Why?

Answer 22

5mm to maximize coverage over distal fractures

Question 23

When does the tibial nail go from 2cm increment to 1cm?

Answer 23

16-28cm x 2cm

28-50cmx1cm

Question 24

Where is the driving end of the nail?

Answer 24

The end that is attached to the jig