Zimmer Biomet Headless Compressionand Twist-Off Screws, Хирургическая техника

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Headless Compression and Twist-Off Screws
Surgical Technique
Insertion
Load the screw onto the T7 Cannulated Driver and Mini
Rachet Handle. Place screw over the 0.9 mm k-wire
down to surface of bone. Advance the screw into
bone by turning the T7 Cannulated Driver clockwise.
Continue advancing until the head of the screw is at
or just below the near cortex. After compression is
achieved, remove the T7 Cannulated Driver and 0.9
mm k-wire. Verify screw position with fluoroscopy.
Screw Removal
For screw removal, insert the T7 Solid Driver into the
head of the screw, and turn the Driver counterclockwise
until the screw is removed.
2.0 x 65 mm Cann Drill Bit AO 110027744
Compatible with the
70 mm and longer k-wires
2.0 x 80 mm Cann Drill Bit AO 110018532
compatible with the
105 mm and longer k-wires
2.5 mm Head Relief Drill AO
110027746 3.0 mm Head Relief Drill AO
110027747
Headless Compression Screw Technique – Bicortical Applications
Figure 11
Drilling (Optional) (cont.)
In situations where bi-cortical lagging is required (such
as a Scarf-Z Osteotomy), use the 2.0 mm Cannulated
AO Drill for preparation of the far cortex (Figure 11).
The medial cortical shelf and metatarsal head are then
osteotomized and rasped to a smooth contour.