EXTERNAL FIXATION SYSTEM - Stryker

1 EXTERNAL FIXATION SYSTEMThe Apex Pin FIXATION SYSTEM is a one step procedurereducing insertion time and reducing insertion temperature. There are three types of FIXATION pins:Self-drilling / Self-tapping Apex PinsThe unique One Step Cutting Technology offers significantadvantages over traditional pins. Apex Pins always act as a new drill, so there is no need to pre-drillTheir One Step Insertionand high cutting performanceleads to reduced operative insertion temperaturesdue to reduced Apex PinsDesigned with a smooth non-cuttingtip for use in hard corticalbone or for use in zones where a previous fracture may haveoccurred.

2 Blunt Apex Pins are based on the same technologyas One Step Pins, however due to their lack of a drill tip, BluntApex Pins require Apex Pins should be used when betterprotection of soft tissues is for use in the Apex Pins Designed for use in double frames requiring a high degreeof Apex PinsDesigned for use in metaphyseal / epiphyseal areas incancellous areas to ensure a higher pin stability and thereforea higher frame stability. Note that Cancellous Apex Pinsrequire Apex PinsTitanium Apex Pins offer the same One Step CuttingTechnology as the self drilling / self tapping pins :Titanium Apex Pins always act as a new drill, so there is no need to pre-drillOne Step Insertion and high cutting performanceleads to reduced operative timeReduced insertion temperatures due to reduced frictionTitanium alloy Ti6Al-4V offers an excellent biocompatibilityand is particularly recommended for patientsRequiring MRI or CT scans since titanium alloy reduces image distortions Allergic to nickel contained in Stainless SteelTitanium alloy Ti6Al-4V has been chosen for titanium ApexPins due toIts hardness which is equivalent to 316L Stainless Steel (37 HRC) and superior to pure titanium (17 HRC)

3 Whose pin tip may be damaged during insertionIts greater resistance to fatigue than pure titanium4 The Apex Pin FIXATION SYSTEM uses an advanced cylindricalthread profile that is designed to improve anchorage and pull-out One Step Pins have a tip design, that providesoptimal cutting conditions during the drilling thread increases contact with the bone byover 30% and optimises the stress distribution in the bone by reducing radial cortical double helical flute creates homogenous threadprofiles and evacuates bone chips to the design features have significantly reduced insertion time and temperature, and have improved anchorage conditions.

4 The axial force and the torque required to insert the pins have also been significantlyreduced. Self-drilling tipSelf-tappingsectionU-shaped threadCutting Technology5 Positive cutting angle improves cortical contactAct as a drill bit and a screw an accurate drilling of the second cortical protrusion due to ashorter tip pointwhich reduces soft tissue insertion moments due to improved insertion temperature tobelow 50 operative time due totheir one step the cutting of the threaddue to a better evacuation ofbone chips through a uniquedouble helical risk of cortical damagedue to uniform improved anchorageImprove frame stabilityReduce risk of infectionImprove fatigue and pull out

5 ResistanceAdvanced Cutting TipDesigned to:Designed to:Advanced Thread Profile50 CThe advanced cutting technology combined with the advanceddesign of the tip of the pin allows high cutting performanceswith an optimal bone debris combination provides a positive influence on the followingparameters which are of vital importance for pin stability:Pin stability is vital to the success of EXTERNAL FIXATION because,whatever the EXTERNAL FIXATION components and whatever theframe constructions, if the pin stability is not good a stableframe construction cannot be Technology SummaryLower insertion forcesLower friction between bone andmetal during pin insertion Lower insertion temperatureLower rate of bone necrosisHigher pin stabilityConical design may lead to looseningRadial compression may lead to cortical damageConical Design Looks OK in Theory.

6 For pre-drillingmeans two step insertion pressure on bone during insertion and increased riskof thermal necrosis during the pre-drilling of loosening due to the conical to back-up the pin if the tip protrudes too Design672 000N/m 10-32 0002 0002 0002 0001, mm6 mm4 mmPin BiomechanicsThe effect of pin diameter on axialframe stiffness. Drill sleeves are imperative in order to protect soft t tap the trocar. Turn anticlockwise for a few turnsto create an insertion point and then proceed sleeves can be utilised together with the clamps or with the insertion guide. Use Stryker Trauma Drill Brace!!

7 Apex Pins have an integrated safety feature to reducepotential breakage of the pin tip. Apex Pins must be usedwith a Stryker Trauma drill brace to effect this drilling feeling of the second safety featurereduces potential tip breakageunder high insertion forcesIn EXTERNAL FIXATION the global stiffness, stability and elasticity of frames is strongly influenced by the configuration thenumber of rods, pin placement, pin diameter and the numberof PlacementAbigger distance between pins induces a higher frame it is recommended to place the pins in the extreme holes ofthe clamps when it is Diameter The choice of pin diameter should be determined by takinginto account all the following parameters:StabilitySize of boneAnatomical locationSoft tissuesRigidity / elasticityWhen comparing axial frame stiffness a 1mm increase in pindiameter will approximately double frame , as a general rule, we can consider that.

8 Minimum pin shaft diameter = Cortical bone thickness / 2 Number of PinsThe number of pins is dependent onEfforts on the frame (lengthening)The frame stiffness to be reachedBy adding pins, the frame stiffness will be Characteristics8 Compatibility between the Apex Pins and theStryker Trauma EXTERNAL FIXATION SystemsStryker Trauma ComponentsStryker Trauma Apex Pin Shaft DiametersHoffmann IIpin to rod coupling (4920-1-020) 4mm 5mmHoffmann IIpin clamp (4920-2-020) 4mm 5mm 6mmHoffmann II Compact pin to rod coupling (4940-1-020) 3mm 4mmHoffmann II Compact clamp (4940-2-020) 3mm 4mmHoffmann II Compact peri-articular clamp (4940-2-200) 3mmTriax pin clamp red (5150-3-075) 5mm 6mmTriax pin clamp blue (5150-3-070) 4mm 5mmTriax pin clamp yellow (5150-3-065) 3mm 4mmTriax single pin clamp red (5150-3-175) 5mm 6mmTriax single pin clamp blue (5150-3-170) 4mm 5mmTriax single pin clamp yellow (5150-3-165) 3mm 4mmTenxor pin post (4936-2-030) 4mm 5mm 6mm9 Dimensions (mm)Cat No.

9 Shaft & ThreadTotal ThreadCat No. DiameterLengthLengthProductsSelf Drilling/Self Tapping5038-5-060360105038-1-08038010503 8-2-080380155038-5-080380205038-1-110311 0105038-2-1103110255023-1-090490105023-2 -090490205023-3-090490305023-3-120412030 5023-5-1204120355023-5-1504150405023-6-1 504150505023-4-1804180405023-6-180418050 TITANIUM5018-3-1205120305018-5-120512035 5016-5-1115018-5-150515040 5016-5-117 5018-6-1505150505016-5-1185018-6-1805180 505016-5-1225018-8-1805180605018-5-20052 00505018-6-2005200605018-5-2505250505018 -7-2505250705021-7-1506150505021-6-18061 80605021-8-2006200705021-8-250625080 Blunt5036-2-060360105036-1-080380105036- 1-580380155036-2-080380205036-1-11031101 05036-2-1103110255027-1-090490105027-2-0 90490205027-3-090490305027-3-12041203050 27-4-1204120355027-4-1504150405027-5-150 4150505027-4-1804180405027-5-180418050 Apex Pins RangeCancellous5015-3-12056120355015-4-1 5056150405015-5-15056150505015-6-1805618 0605015-7-250562507010 Dimensions (mm)Cat No.

10 ShaftThreadTotal ThreadDiameterDiameterLengthLengthProduc tsTransfixing5030-3-20045200355030-4-200 45200405030-5-20045200505030-3-250452503 55030-4-25045250405030-5-25045250505030- 6-25045250605030-4-30045300405030-5-3004 5300505030-7-3004530070 Dimensions (mm)Cat No. Shaft & ThreadTotal ThreadDiameterLengthLengthBlunt continuation5020-3-1205120305020-6-12051 20355020-3-1505150405020-7-1505150505020 -7-1805180505020-8-1805180605020-7-20052 00505020-6-2005200605020-7-2505250505020 -8-2505250705019-7-1506150505019-6-18061 80605019-8-2006200705019-8-250625080 Apex Pins RangeCatalogue DescriptionNumber5057-0-100 Apex Drill Guide Assembly5057-0-200 Drill Brace Assembly for 3mm/4mm/5mm/6mm Apex Pins5057-3-1003mm Predrilling Assembly-Short5057-3-2003mm Predrilling Assembly-Long5057-4-1004mm Predrilling Assembly-Short5057-4-2004mm Predrilling