First Month Overview

Question 1

Locking vs non locking screws?

Answer 1

Locking : engages with the plate
The screw tightens and locks to the threaded screw holes in the plate, pulling the bone to the plate
Twice the cost of non locking

Nonlocking : doesn’t lock into anything, use for bone to bone

Question 2

Foot anatomy

Answer 2

Question 3

Planes

Answer 3

Transverse, frontal, saggital

Question 4

Directional terms

Answer 4

Question 5

Headed vs headless screw?

Answer 5

Headed : fixation of small and long bones
Example: Asnis cannulated screw system

Headless : self tapping, reverse cutting flutes. for small bone fixation.
Example: Fixos headless cannulated compression screws

Question 6

Partially threaded vs fully threaded Screw?

Answer 6

Partially Threaded : threaded partially, unthreaded section below the head which is the grip length
Some like the grip of the unthreaded section to pull the bone

Fully Threaded : threads that run up the whole length of the screw

Question 7

Define: Osteotomy

Answer 7

Surgical cutting of a bone, or removal of a piece of bone

Question 8

Define: Arthrodesis

Answer 8

Surgical immobilization of a joint by fusion of the adjacent bones

Question 9

Define: Ankle Fracture

Answer 9

Aka, a broken ankle. One or more bones in the ankle joint are broken.

Question 10

Define: Ankle Replacement Surgery

Answer 10

A surgical treatment for ankle arthritis in which damaged portions of the bone and cartilage in joint are removed and replaced with implants

Question 11

Define Ankle Athritis

Answer 11

A clinical condition in which the ankle joint has damaged or worn out cartilage

Question 12

Asnis III

Answer 12

A headed, cannulated compression screw system
Sizes 4.0, 5.0, 6.5, 8.0

Question 13

Asnis micro

Answer 13

A headed, cannulated compression screw system
Sizes 2.0, 3.0

Question 14

Fixos and fixos 2

Answer 14

Headless cannulated compression screw system
Fixos sizes: 2.5, 3.5, 4.0mm
Fixos twist off screw sizes: 2.0, 2.7mm

Fixos 2: sizes: 4.0, 5.0, 7.0mm

Question 15

Variax 2 core tray

Answer 15

A core tray
Includes one set of t8 / t10 lag screws, locking and non locking
Standard instruments
Never will be used alone. Always an add-on, either small frag, foot plates, etc

Question 16

What is in the Variax 2 small fragment add on tray?

Answer 16

Drawer 1: instruments
Guide wires (1.4), drill (2.7) measuring gauge (2.0)
Drawer 2: plates
One third tubular plates, straight narrow plates, straight broad plates, curved broad plates, distal lateral fibula plates
Drawer 3: asnis 4.0 cannulated screws
4.0 partially threaded screws: 24mm - 50mm (2mm increments)
55mm - 70mm (5mm increments)

4.0 fully threaded screws: 24mm - 50mm (2mm increments)

Question 17

Variax 2 ded foot plates only tray

Answer 17

Foot plates only
1 drawer
NCM plate
talo navicular plate, navicular cuneiform plate
Lateral column lengthening plate
Cuboid / navicular / talus plate
Curved and straight plates
T & L shaped plate
H & Rectangular plate
Calcaneal plate

Question 18

Variax 2 ded foot tray

Answer 18

4 levels
Level 1: standard instruments
Level 2: reduction instruments
Level 3: plates

NCM plate
talo navicular plate, navicular cuneiform plate
Lateral column lengthening plate
Cuboid / navicular / talus plate
Curved and straight plates
T & L shaped plate
H & Rectangular plate
Calcaneal plate
Level 4: T8 & T10 screws
T8: 2.4mm / 2.7mm screws
T10: 3.5mm
Locking and non ,locking

Question 19

What are the names of these plates

Answer 19

Question 20

What are these lag screw sizes and interface options

Answer 20

Question 21

What interface goes with what plate?

Answer 21

Question 22

Variax 2 T10 Only Tray

Answer 22

We use this tray for:
3 levels
Level 1: standard instruments
Level 2: 2.7mm & 3.5mm screws, locking and non locking
Level 3: reduction instruments

Question 23

What tray is this?

Answer 23

Variax 2 T10 Only System Tray

Question 24

What procedure is this and instruments? What trays are needed?

Answer 24

This is an ankle fracture example.
Variax 2 core tray & small frag add on tray
1. Drill guide
2. Overdrill / under drill
3. Screw and screwdriver (non locking screw in bone)
4. Olive wire to hold plate
5. Plate on
6. Speed drill

Question 25

What products / systems may be needed for a bunion correction surgery?

Answer 25

Anchorage or Variax 2 plates
Asnis micro cannulated screw
Fixos cannulated headless screw

Question 26

Operative example: fracture of tarsals and metatarsals

Answer 26

1. Drill guide (1.4 x 2.7mm) insert guide wire (1.4mm x 150mm)
2. Use X-ray for proper placement
3. Measure for screw length. Use asnis 4.0 screw. Slide measuring gauge over guide wire
4. Using cannulated screwdriver, insert screw
5. Verify positioning and remove guide wire

Question 27

Operative example: medial and lateral malleolar & pilot fractures

Answer 27

1. Drill guide (2.0 x 3.5mm) insert guide wire (2.0 x 150mm)
2. Use X-ray for proper placement
3. Measure for screw length. Use asnis 5.0 screw. Slide measuring gauge over guide wire
4. Using cannulated screwdriver, insert screw
5. Verify positioning and remove guide wire

Question 28

Operative example: Chevron Osteotomy

Answer 28

1. Bone prep
   Make a dorsal medial skin incision crossing the first mtp joint. Retract soft tissues. Perform a lateral release if necessary
2. Perform T-shaped incision of the capsule thus exposing the joint
3. Respect medial eminence
4. Insert k-wire in center of metatarsal head
5. Perform V shaped osteotomy 60 degree angle
6. Place drill guide (0.8 x 1.7mm). Insert guide wire (0.8 x 100mm) for screw
7. Measure for screw, use asnis micro 2.0 screw
8. Pre drill, 1.7mm
9. Insert screw , 2.0mm screwdriver, place over guide wire