Asnis III Cannulated Screw System

Question 1

What is asnis III

Answer 1

A cannulated screw system
Low profile head, self drilling, self tapping design, long drill bit
4 size options Titanium or stainless steel

Question 2

What size options does asnis III come in

Answer 2

4.0 mm, 5.00 mm, 6.5mm, 8mm

Question 3

What size screws are generally used for foot & ankle?

Answer 3

4.0 - fractures of the tarsals, metatarsals, fibula, calcaneus,
Tmt or mtp fusions, metatarsal and phalangeal osteotomies

5.0 - medial and lateral malleolar and pilot fractures, femoral fractures, cacalneal and Talar fractures, arthrodesis of the tarsals

Question 4

Order of operation of tools

Answer 4

1. Guide Wire insert (use double drill guide, insert guide wire)
2. Measure for screw (slide measuring guide over guide wire to select appropriate screw length)
3. Drill
4. Countersink
5. Screw driver (cannulated screw driver, insert screw over guide)

Question 5

Partially threaded vs fully threaded?

Answer 5

Question 6

Screw Range
4.0mm Screw
Partially threaded:
Fully threaded:

Answer 6

Partial: 1/3 thread
14mm - 50mm (2mm increments) Smallest option
55mm - 70mm (5mm increments) larger option

Full: 10mm - 50mm (2mm increments) one option

Use for: call fractures, fractures of tarsals and metatarsals, osteotomies, Tmt and mtp Arthrodesis

Question 7

Screw Range
5.0 Screw
Partially threaded:
Fully threaded:

Answer 7

5.0mm screw
Partial: 1/3 thread
20mm - 50mm (2mm increments) smallest option
55mm - 80mm (5mm increments) larger option

Full: 20mm - 50mm (2mm increments) smaller option
55mm - 70mm (5mm increments) larger option

Use for: calc fractures, Arthrodesis of tarsals, fractures of proximal tibia

Question 8

Screw Range
6.5mm Screw
Partially threaded:
Fully threaded:

Answer 8

Partial: 20mm thread 40mm thread
40mm-120mm. 40mm-130mm
(5mm increments) (5mm increments)

Full: 30mm-150mm (5mm increments) one option

Use for: ankle Arthrodesis

Question 9

Screw Range
8.0 Screw
Partially threaded:
Fully threaded:

Answer 9

Partial: 25mm thread
40mm - 130mm ( 5mm increments )
Steel Only 135mm - 180mm ( 5mm increments )

Full: 40mm - 150mm ( 5mm increments )

Use for: ankle Arthrodesis

Question 10

What guide wire and drill guide goes with 4.0mm cannulated screw?

Answer 10

1.4 x 150mm guide wire
1.4 x 2.7mm double drill guide

Question 11

What guide wire and drill guide goes with 5.0mm cannulated screw?

Answer 11

2.0 x 150mm guide wire
2.0 x 3.5mm double drill guide

Question 12

What guide wire and drill guide goes with 6.5 and 8.0mm cannulated screws?

Answer 12

3.2 guide wire