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Headless Compression and Twist-Off Screws
Surgical Technique
Drilling (Optional)
Note:
The Zimmer Biomet Headless Compression
screws are designed to be self-drilling and self-
tapping, and may be inserted under power.
If the bone is deemed to be too hard, or an oblique
approach is required, use a Head Relief Drill to prepare
the near cortex.
Tip:
For the 2.5 mm screw use the 2.5 mm Head Relief
Drill, and for the 3.0 mm screw, use the 3.0 mm Head
Relief Drill (Figure 10).
Headless Compression Screw Technique – Bicortical Applications
Figure 9
K-Wire Placement
For bi-cortical applications, such as the Scarf-Z or
Ludloff osteotomy, insert the k-wire until the tip
begins to exit the outer wall of the far cortex (Figure 9).
Screw measurement subtraction is not necessary for
bi-cortical fixation.
0.9 x 70 mm K-wire Cobalt Chrome
0.9 x 105 mm Sterile K-wire Cobalt Chrome
0.9 x 152 mm Trocar Sterile K-wire Stainless Steel
K-Wire Options
Figure 10