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CANNULATED SCREW SYSTEM Rationale, Features & Benefits The Stryker Trauma Cannulated Screw Systems are designed to optimise surgical outcomes while simplifying procedures. The systems incorporate several unique features intended to enhance screw placement, insertion and removal as follows: Low Profile Screw Head Reduced potential for soft-tissue irritation Improved external aesthetics Material Choice Titanium Alloy (TAV) Increased CT, MRI and Bio-compatibility Anodizing Type II hardens Impla
  CANNULATED SCREW SYSTEM  Self-drilling / Tapping design Fast efficient cutting for reduced operative time.Flat tip to minimise the potential for soft-tissue irritation Reverse Cutting Flute To facilitate removal Thread Choice Implants available with both partial and full thread options Material ChoiceTitanium Alloy (TAV) Increased CT, MRI and Bio-compatibilityAnodizing Type IIhardens Implant surface to minimise fretting Low Profile Screw Head Reduced potential for soft-tissue irritationImproved external aesthetics Large diameter Guide Wires Large diameter reduces risk of deflection. Threaded tip engages bone for optimal purchase Rationale, Features & Benefits The Stryker Trauma Cannulated Screw Systems are designed to optimise surgical outcomes while simplifying procedures. The systemsincorporate several unique features intended to enhance screw placement,insertion and removal as follows: Stainless Steel (316LVM) Compatibility with current steel systems Packaging Choice Implants available both sterile and non-sterile Rationale, Features & Benefits  System Features The modular case design offers improved aesthetics and better access to the instrumentation thus simplifying the procedure further. The inclusion of Elastosil ® Handles ensures maximum surgeon grip as well as minimising heat retention following sterilisation. Large Diameter Guide Wires TheSystems feature largerdiameter Guide Wires with taperedcore. This unique design reducespotential for a stress riser at thethread/shank junction. The larger diameter provides greaterbending stiffness to reduce deflection. This ensures the most precise of screw placement. Modular Case Design and Elastosil ® Handles 0200 1.4 2.0 3.2 400600800 Guide Wire Diameter (mm)    B  e  n   d   i  n  g   S   t   i   f   f  n  e  s  s   (   N  m  m    2   x   1   0    3    ) 1000 1.0 1.2 1.6 1.8 2.2 2.4 2.6 2.8 3.0 S CREW  R ANGE  – T ITANIUM AND  S TEEL 4.0mm 5.0mm 6.5mm 8.0mmPartial 1/3 Thread1/3 Thread20mm Thread40mm Thread25mm Thread14mm - 50mm*20mm - 50mm*40mm - 120mm**55mm - 120mm**40mm - 120mm**55mm - 70mm**55mm - 80mm** Full 10mm - 50mm*20mm - 50mm*30mm - 120mm**40mm - 120mm**55mm - 70mm** * 2mm increments** 5mm increments  Operative Technique - 4.0mm Insert Guide Wire Using the ø1.4/2.7mm Double Drill Guide,insert a ø1.4x150mm Guide Wire to the appropriate depth.Use Image Intensification to control reduction and Guide Wire placement. Place additional Guide Wires as necessary. Remove the Double Drill Guide. Note:  In dense bone, puncturing the cortex with the ø1.4x150mm Drill Bit to initiate the Wire may reduce potential heat and/or deflection. Alternative:  Substitute the ø1.4x150mm Guide Wire with a ø1.4x150mm Drill Bit. Throughout the procedure it is possible to interchange the Guide Wire and Drill Bit. Option:  AParallel Drill Guide is available for parallel placement of Guide Wire. Countersink or Washer? Where soft tissue coverage is minimal, use of the Countersink to further recess the low profileScrew Head may be beneficial. Care should be taken to ensure the Cortex is not countersunk past its capacity.In osteoporotic bone or where the Cortex is thin,Washers can be applied to spread the load of theScrew Head over a greater area. Note:  The Countersink design does not require pre-drilling. Indications 4.0mm ãFractures of the tarsals and metatarsalsãFractures of the olecranon, distal humerusãFractures of the radius and ulnaãPatella fracturesãDistal tibia and pilon fracturesãFractures of the fibula, medial malleolus, os calcisãTarso-metatarsal and metatarso-phalangeal arthrodesesãMetatarsal and phalangeal osteotomiesãOsteochondritis dissecansãLigament fixationãFractures of the pelvic ringãOther small fragment, cancellous bone fractures Step oneOptional
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