VariAx Distal Radius Locking Plate System

Transcription

1 Osteosynthesis VariAx Distal Radius Locking Plate System Operative Technique Anatomical & Universal Volar Plates Dorsal Plates Fragment Specific Plates

2 Introduction The VariAx Distal Radius Plating System represents the Next Generation of Bone Fixation for your Distal Radius Fracture Needs. Indications Intra-articular and extra-articular fractures of the distal radius. Reconstruction of the distal radius. The VariAx Distal Radius Plating System represents the Next Generation of Bone Fixation for your Distal Radius Fracture Needs. System Features: Comprehensive Plating System Providing Anatomical Volar and Dorsal, Universal Volar and Fragment Specific Solutions. Fixed Angle Drill Guide Assures placement of screws & pegs in a pre-determined angle. Polyaxial Drill Guide Allows locking with an additional angulation of ±15 degrees in any hole on the plate, except the oblong hole in the shaft. Anatomical Volar Plate Encourages articular support with Locking screws & pegs, provides buttressing to the volar lunate facet and stable fixation of radial styloid fragments with two screws. Full range of 2.0mm to 2.7mm Locking and Non-Locking screws & pegs Offering intraoperative solutions for different fracture fixation requirements. Anodization Type II Increases the strength of all VariAx Distal Radius Locking Plates and reduces the incidence of tissue adherence. Cross-Pin Screw Head Design SmartLock* Locking Technology: Patented SmartLock Locking Technology Encourages locked screw to plate interface due to combination of Grade II - Ti Plates and Grade V - Ti Screws & Pegs. SmartLock Locking Screws & Pegs Designed with threads on the underside of the screw head, which upon insertion engage the circular lip within any hole on the plate, except the oblong hole in the shaft. One-step Locking Is achieved by simply inserting a Locking Screw or Peg within the polyaxial locking range of ±15 degrees, without the need for further steps Axial stability Friction fit Easy screw pick up This operative technique was developed with Richard Rogachefsky, MD. *The SmartLock Technology is patented (US 6, 322, 562; DE ) by Professor Dietmar Wolter, Hamburg, Germany. 2

3 Overview Plate Options Left Right Anatomical Volar Plates Universal Volar Plates Dorsal Plates Radial Column Plates Ulnar Column Plates Screw/Peg Options 2.0mm Smooth Locking 2.3mm Locking 2.7mm Locking 2.7mm Partial Thread Locking 2.3mm Non- Locking 2.7mm Non- Locking 2.7mm Partial Thread Non-L o c k i ng 3

4 Operative Technique Anatomical Volar Plate 1. An incision is made approximately 8cm long just radial to the FCR tendon. If more exposure is necessary, the incision can be extended radially at 45 degrees along the wrist flexion creases. 2. The FCR tendon is retracted ulnarly and dissection is carried down through the floor of the FCR sheath. This exposes the FCR muscle belly, which may be retracted ulnarly as well. 3. The Pronator Quadratus is identified and dissected in its entirety off of the volar surface of the radius as an ulnarly based flap. 4. The insertion of the Brachioradialis may be released. Left Right 5. The fracture is visualized and reduced. 6. The use of external traction, and/ or the use of K-Wires for temporary fixation may be helpful. If necessary, bone graft materials may be used as an adjunct to the plate to provide an optimal bone void filler. The use of AP/Lateral fluoroscopy is helpful to determine correct fracture reduction and plate position. 10. The first pilot hole should be drilled in the oval gliding hole using the appropriate drill guide. 11. Use the depth gauge to determine screw length. 7. Choose the appropriate implant according to patient anatomy and fracture pattern. 12. A non-locking screw is placed in the oval gliding hole but not completely tightened to allow adjustment of the plate in distal or proximal directions. 13. After confirmation of the correct positioning of the anatomic volar plate by use of fluoroscopy, tighten the first screw The plate should be placed slightly below the distal edge of the radius to support the volar articular fracture fragments and also to avoid inserting screws or pegs into the joint. 9. Zebra striped K-Wires and/or Olive K-Wires can be used for temporary fixation while evaluating the placement of the plate. 14. Once the position of the plate has been determined, it is time to decide which drill guide to use based upon preference and/or fracture pattern. Note: Using one of the provided drill guides for screw hole preparation is mandatory. Not using a drill guide may lead to drilling out of specified locking range and severely compromise the locking capabilities.

5 Operative Technique Fixed Angle Drill Guide This drill guide will ensure the same placement of screw options in every case and therefore does not allow the flexibility of choosing an angle. It is designed to fit in the pre-tilted lips within the holes on the plate by simply pressing the drill guide in to the hole. 18 distal 12 lateral 0 18 distal 12 lateral 15 distal 15 lateral 5 proximal 0 10 proximal Note: In order to prevent toggling, this drill guide is designed to fit very tightly into the holes of the plate. When utilizing this instrument follow the same trajectory of the pre-tilted lips to facilitate its placement. 15 distal 15 lateral 0 12 proximal 5 proximal Pre-determined Screw Pattern 5 proximal SmartLock Polyaxial Drill Guide Allows for ±15 degrees of custom angulation and may be used for more complex fractures. A lip on the drill sleeve will engage and allow toggling in the hole. The range in which the drill guide toggles will create a 30 degrees cone and every angle in this range will be a locking position. This may allow for the surgeon to aim where the screw/peg should be placed. 2.3mm Drill Guide/K-Wire Guide The K-Wire guide provides an option to assess potential screw positions by inserting a 1.1mm K-Wire prior to any drilling or screw insertion. By using the same technique, this K-Wire guide offers the same 30 degrees locking cone as the SmartLock Polyaxial Also, depending on the placement of the plate, there may be a need to angle a screw/peg out of the fracture line. Note: First fully engage the drill guide in the hole and then aim the drill in the desired direction. Drill Guide. It may also be utilized to provide temporary fixation to smaller fragments, while catching these with adjacent locking screws. The 2.3mm drill guide can be used as an overdrill to lag 2.3mm screws if compression is desired or as a pilot hole for 2.7mm screws if the insertion is hindered. This drill guide can only be used in a fixed angle. 15. Using the desired drill guide, repeat drilling, measuring and placement of screws/pegs in the distal holes. 16. Place locking or non-locking screws in the proximal end of the plate. Note: If the insertion of the 2.7mm screw is hindered, it is recommended to use the 2.3mm cortical drill bit in conjunction with the 2.3mm drill guide. 17. Verify proper placement of screws/ pegs by use of fluoroscopy to ensure that neither penetrate the joint. 18. Close the incision. 5

6 Operative Technique Universal Volar Plate 1. An incision is made approximately 8cm long directly over the FCR tendon. If more exposure is necessary, the incision can be extended radially at 45 degrees along the wrist flexion creases. 2. The FCR tendon is retracted ulnarly and dissection is carried down through the floor of the FCR sheath. This exposes the FCR muscle belly, which may be retracted ulnarly as well. 3. The Pronater Quadratus is identified and dissected in its entirety off of the volar surface of the radius as an ulnarly based flap. 4. The insertion of the Brachioradialis may be released. 5. The fracture is visualized. 6. The fracture is reduced. The use of external traction, and/or the use of K-Wires for temporary fixation could be helpful.if necessary, bone graft materials may be used as an adjunct to the plate to provide an optimal bone void filler. 7. The plate should be placed slightly below the distal edge of the distal radius to avoid inserting screws or pegs into the joint. The use of AP/Lat fluoroscopy is helpful to determine correct fracture reduction and plate position. 8. K-Wires can be used for temporary fixation. 9. The first pilot hole should be drilled in the oval gliding hole using the appropriate drill guide. 10. Measure the depth of the hole to determine screw length. 11. The screw is placed in the oval gliding hole but not completely tightened to allow adjustment of the plate in distal or proximal directions. 12. After confirmation of the correct positioning of the volar plate by use of fluoroscopy, tighten the first screw. 13. Repeat drilling, measuring and placing of screws/pegs in the distal holes of the plate. The position and number of screws applied depends on the type of fracture. 14. Place the bone or locking screws in the proximal end of the plate. 15. Verify proper placement of screws and pegs by use of fluoroscopy to ensure that neither penetrates the joint. 16. Close the incision. 6

7 Operative Technique Dorsal Plate 1. Longitudinal incision is made just ulnar to Lister s tubercle at the distal radius region. 2. Dissection is performed down to the extensor retinaculum. The third compartment is opened and the extensor pollicis longus is displaced radially. 3. The second compartment wrist extensors are subperiosteally elevated radially and the fourth compartment is subperiosteally elevated ulnarly. The dorsal interosseous nerve might be cut off for pain reduction. 4. The fracture is reduced. The use of an external traction device and/or K-Wires for temporary fixation may be helpful. If necessary, bone graft materials may be used as an adjunct to the plate to provide an optimal bone void filler. 5. If necessary, adapt the plate for correct anatomical position. Removal of tuberculum listeri might be necessary. 6. The plate should be placed slightly below the distal edge of the distal radius to avoid inserting screws/pegs into the joint. Correct positioning of the plate should be confirmed by use of fluoroscopy. The first pilot hole should be drilled in the oval gliding hole. 7. Measure the depth of the hole to determine screw length. 8. Check the screw length on the measuring scale of the implant module (optional). 9. The screw is placed in the oval gliding hole but not completely tightened to allow adjustment of the plate in a distal or proximal direction. 10. Confirm proper plate positioning by use of fluoroscopy and then tighten the first screw. 11. Repeat drilling, measuring, and placing of screws/pegs into the distal holes of the plate. The position and number of screws applied depends on the type of fracture. 12. Place bone or locking screws in the proximal end of the plate. 13. Confirm correct placement by use of fluoroscopy. 14. Verify proper placement of screws and pegs by use of fluoroscopy to ensure that neither penetrates the joint. 15. Close the incision. 7

8 Operative Technique Radial Column Plate 1. Incision is made along the radial column. 2. Care must be taken to avoid injury to dorsal sensory branch of the radial nerve. 3. First dorsal compartment is freed from dorsal to volar to allow plate placement. 4. Plate is placed along the radial column. 5. Screws or distal K-Wires can be placed for fixation options. 6. The 3 in 1 K-Wire bender/cutter/inserter is used to place K-Wires distally. 7. It is recommended only one K-Wire be placed distally at a time in order to make proper use of the bender/cutter/inserter instrument. 8. After insertion, the tamp and mallet can be used to further insert the K-Wires. 9. K-Wires and screws can be placed in conjunction for more rigid fixation. 10. The incision is closed. 8

9 Ordering Information Volar Plates Dorsal Plates Anatomical Volar DR Plate Narrow, Right Dorsal DR Plate Standard, Right Anatomical Volar DR Plate Narrow, Left Anatomical Volar DR Plate Standard, Right Anatomical Volar DR Plate Standard, Left Dorsal DR Plate Standard, Left Dorsal DR Plate Wide, Right Anatomical Volar DR Plate Narrow, Right, Long Dorsal DR Plate Wide, Left Anatomical Volar DR Plate Narrow, Left, Long Anatomical Volar DR Plate Standard, Right, Long Anatomical Volar DR Plate Standard, Left, Long Dorsal DR Plate Standard, Right, XLong Dorsal DR Plate Standard, Left, XLong Narrow, Short Dorsal DR Plate Wide, Right, XLong Standard, Short Dorsal DR Plate Wide, Left, Xlong Wide, Short Fragment Specific Plates Narrow, Long Standard, Long Radial Column Plate Short Radial Column Plate Long Ulnar Column Plate Short, Right Wide, Long Ulnar Column Plate Short, Left Narrow, XLong Standard, XLong Ulnar Column Plate Long, Right Ulnar Column Plate Long, Left Wide, XLong The Variax Distal Radius Plating System incorporates plate designs originating from the Matrix Distal Radius Plating System developed by Stryker in conjunction with Richard Rogachefsky, MD. 9

10 Ordering Information 2.0mm Locking Pegs * 2.7mm Bone Screws * Ti Length mm Ti Length mm mm Locking Screws * 2.3mm Bone Screws * Ti Length mm Ti Length mm mm Locking Screws * 2.7mm Partially Threaded Bone Screws * Ti Length mm Ti Length mm mm Partially Threaded Locking Pegs * Ti Length mm Twist Drills mm, Stryker shaft end 2.3mm, AO shaft end 2.3mm, Dental shaft end 2.0mm, Stryker shaft end 2.0mm, AO shaft end 2.0mm, Dental shaft end 1.9mm, Stryker shaft end 1.9mm, AO shaft end 1.9mm, Dental shaft end * Order Quantity: Packages of 5 Note: All screws/pegs may be ordered single-packed by placing an E at the end of the respective Cat. Nr. They can be ordered single sterile-packed by placing a S at the end of the Cat. Nr. All Drills may be ordered sterile by replacing 60 by 91- in their respective Cat.Nr. 10

11 Ordering Information Instrumentation Implant Module Screwdriver Ratcheting Handle VariAx Distal Radius Locking Implant Module, double-sized Cross-Pin Blade 2.3mm/2.7mm Polyaxial Drill Guide 2.3mm/2.7mm Inlay for Anatomical Volar Distal Radius Plates Fixed Angle Drill Guide 2.3mm/2.7mm Inlay for Universal Volar Distal Radius Plates mm Overdrill and K-Wire Guide Depth Measuring Gauge Sterilizing Container Plate Bending Pliers VariAx Lid for Sterilizing Container K-Wire Bending Pliers Forceps with Grasping Lips Sterilizing Container, Halfsize, w/o VariAx Lid Bone Reduction Instruments Lobster Bone Holding Forceps VariAx Distal Radius Plating Instrument Tray Lewin Bone Holding Forceps, Sharp Tip VariAx Distal Radius Bone Reduction Tray Elevator, Double sided, Narrow&Wide, Hohmanns K-Wires Elevator, Double sided, Strong&Light Curved Bone Hook Mallet (250g) Tamp K-Wire with Olive Stop * K-Wire, 1.1x160mm ** Optional Items Depth Measuring Gauge (Aluminium, UDR Version) Marker - Locking Screws 2.3mm Marker - Locking Screws 2.7mm Marker - Locking Pegs 2.0mm Marker - Bone Screws 2.3mm Marker - Bone Screws 2.7mm Marker - PT Bone Screws 2.7mm Marker - PT Locking Pegs 2.7mm Marker - 2.3mm * Order Quantity: Packages of 5 ** Order Quantity: Packages of 10 11

12 Complementary Products Now Stryker Osteosynthesis offers you a wide variety of solutions for the treatment of all your Upper Extremity & Hand Injuries. TwinFix KnifeLight T2 Humeral Nail Hoffmann II Micro Lengthener Profyle and VariAx Hand Hoffmann II Compact MRI AxSOS Proximal Humeral Plate Asnis III 4.0 Cannulated Screws T2 Proximal Humeral Nail 12

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16 Stryker Leibinger GmbH & Co. KG Bötzinger Straße 41 D Freiburg Germany This document is intended solely for the use of healthcare professionals. A surgeon must always rely on his or her own professional clinical judgment when deciding whether to use a particular product when treating a particular patient. Stryker does not dispense medical advice and recommends that surgeons be trained in the use of any particular product before using it in surgery. The information presented in this brochure is intended to demonstrate a Stryker product. Always refer to the package insert, product label and/or user instructions including the instructions for Cleaning and Sterilization (if applicable) before using any Stryker products. Products may not be available in all markets. Product availability is subject to the regulatory or medical practices that govern individual markets. Please contact your Stryker representative if you have questions about the availability of Stryker products in your area. Stryker Corporation or its divisions or other corporate affiliated entities own, use or have applied for the following trademarks or service marks: Stryker, TwinFix, T2, KnifeLight, Hoffmann II Micro, Hoffmann II Compact MRI, Profyle Modular, AxSOS, Asnis and VariAx. All other trademarks are trademarks of their respective owners or holders. The products listed above are CE marked. Literature Number: LOT E5008 Copyright 2008 Stryker