Technique Guide. Self-Drilling Schanz Screws. Designed to optimize the bone/pin interface.

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Technique Guide Self-Drilling Schanz Screws. Designed to optimize the bone/pin interface.

Self-Drilling Schanz Screws The self-drilling Schanz screw has been specifically designed to optimize the bone/pin interface to reduce the occurrence of pin tract related complications in external fixation. Efficient drill bit and tap One-step power insertion Precise pilot hole and threads Reduced heat generation Decreased insertion torque Short, 2% core taper provides optimal radial preload Reduces micromotion and pin tract problems Standard, symmetrical thread profile Improved pullout strength in diaphyseal and metaphyseal bone Smooth thread/shaft transition area* Reduced stress riser Standard shaft diameters Fully compatible with AO large, medium and small external fixators Available in implant quality 316L stainless steel or commercially pure (CP) titanium * The 4.0 mm/2.5 mm and 4.0 mm/3.0 mm Schanz screws do not have a thread/shaft transition area. Self-Drilling Schanz Screws

The unique design of the self-drilling Schanz screw provides reduced heat generation and insertion torque while improving pullout resistance in cortical and cancellous bone. Standard vs Self-Drilling Schanz Screws* 40 30 20 10 0 Temperature Increase (C) Insertion Torque (Nm x 10-1 ) Cortical Pullout (N x 10 2 ) Cancellous Pullout (N x 10 2 ) Standard 5.0 mm Schanz screw (predrilled then inserted at 60 rpm) 5.0 mm self-drilling Schanz screw (inserted at 400 rpm) * Internal testing on file at. Bench test results may not necessarily be indicative of clinical performance.

Technique Basic Technique Make a stab incision and pass a protection sleeve with trocar to the near cortex. Dimple the cortex and remove the trocar. Irrigate to minimize heat generation and insert the screw with the power drive. Use the image intensifier to verify screw depth during insertion. Remove the power drive and protection sleeve. The thread/shaft transition area should not contact the near cortex. Diaphyseal Application Metaphyseal Application Alternative Technique Use the power drive to insert the screw through near cortex only. Remove the drill, place the universal chuck with T-handle on the screw and complete insertion by hand. Note: The basic insertion technique requires the tip to be embedded in the far cortex to resist cantilever forces. It is not necessary for the tip to penetrate through the far cortex. However, if the surgeon feels it is needed, as in osteopenic bone, the screw may be inserted so that it protrudes slightly through the far cortex. Self-Drilling Schanz Screws

Product Information Stainless Steel Self-Drilling Schanz Screws Hydroxyapatite- Coated Total Thread Stainless Stainless Steel, Diameter Length Length Steel sterile (mm) (mm) (mm) 294.769 4.0/2.5* 80 20 294.771 294.771SHA 4.0/3.0* 80 20 294.772 4.0/3.0* 100 20 294.774 4.0 60 20 294.775 294.775SHA 4.0 80 20 294.776 294.776SHA 4.0 100 30 294.777 294.777SHA 4.0 125 40 294.778 294.778SHA 4.0 150 40 294.779 294.779SHA 4.0 175 40 294.782 294.782SHA 5.0 100 30 294.783 294.783SHA 5.0 125 40 294.784 294.784SHA 5.0 150 60 294.785 294.785SHA 5.0 175 60 294.786 294.786SHA 5.0 200 80 294.788 294.788SHA 5.0 250 80 294.792 6.0 100 30 294.793 6.0 125 40 294.794 6.0 150 60 294.795 6.0 175 60 294.796 294.796SHA 6.0 200 80 294.798 6.0 250 80 4.0 mm/2.5 mm 4.0 mm/3.0 mm 4.0 mm 5.0 mm 6.0 mm * Shaft/thread diameter. Shaft and thread diameters are the same for all other sizes listed.

Product Information Titanium Self-Drilling Schanz Screws Hydroxyapatite- Coated Total Thread Titanium, Diameter Length Length Titanium sterile (mm) (mm) (mm) 494.769 4.0/2.5* 80 20 494.771 494.771SHA 4.0/3.0* 80 20 494.772 4.0/3.0* 100 20 494.774 4.0 60 20 494.775 4.0 80 20 494.776 4.0 100 30 494.777 4.0 125 40 494.778 4.0 150 40 494.779 4.0 175 40 494.782 5.0 100 30 494.783 5.0 125 40 494.784 494.784SHA 5.0 150 60 494.785 494.785SHA 5.0 175 60 494.786 494.786SHA 5.0 200 80 494.788 5.0 250 80 494.792 6.0 100 30 494.793 6.0 125 40 494.794 6.0 150 60 494.795 6.0 175 60 494.796 6.0 200 80 494.798 6.0 250 80 4.0 mm/2.5 mm 4.0 mm/3.0 mm 4.0 mm 5.0 mm 6.0 mm * Shaft/thread diameter. Shaft and thread diameters are the same for all other sizes listed. Self-Drilling Schanz Screws

Also Available 01.302.602 Medium External Fixator Set, with self-drilling Schanz screws 01.302.604 Medium External Fixator Set, with titanium self-drilling Schanz screws 105.957 Power Drive Set 115.720 Large External Fixator Set, with self-drilling Schanz screws 115.740 Large External Fixator Set, with titanium self-drilling Schanz screws 115.750 Small External Fixator Set, with titanium self-drilling Schanz screws 115.755 Small External Fixator Set, with self-drilling Schanz screws 115.940 Hybrid Fixator Universal Set 117.95 Supplemental Set, for Bone Segment Transportation 391.73.79 Bolt Cutter Heads and Handles 393.101.104 Drive Adaptors with quick coupling, for 4.0 mm 6.0 mm Schanz screws 394.01 Large Lengthening Apparatus 394.02 Small Lengthening Apparatus 394.35 Large Distractor, complete

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