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Summary of Contents for Stryker Scorpio TS
- Page 1 Orthopaedics ® Scorpio Single Axis Revision Knee System Scorpio TS Trial Cutting Guide Surgical Protocol...
- Page 2 Knee System Scorpio TS Trial Cutting Guide Surgical Protocol Acknowledgements Introduction Stryker Orthopaedics would like to thank This surgical protocol is a supplement Dr. Masini for his help in developing the to the Scorpio Total Stabilizer Revision Scorpio Trial Cutting Guide.
- Page 3 Tibial and Femoral Canal Preparation Scorpio Trial Cutting Guide Tibial Preparation Prepare the tibia following the Scorpio Total Stabilizer Revision Knee System Surgical Protocol (Lit. No. LSTS/ST, pages 1- 5). If an offset is needed, use the tibial offset reamer to prepare for the tibial offset.
- Page 4 Femoral/Tibial Trial Selection Scorpio Trial Cutting Guide Femoral/Tibial Trial Selection Select the appropriate size femoral trial cutting guide, offset adapter, and corresponding tibial insert trial (Table 1). Appropriate sizing can be achieved through the use of: • Previous operative notes •...
- Page 5 Femoral/Tibial Trial Selection (continued) Scorpio Trial Cutting Guide Assembly Assemble the trial cutting guide, offset adapter, and appropriate size trial stem as shown (Figure 5). A neutral offset adapter may be used initially to construct the trial cutting guide assembly until the need for a femoral offset is determined.
- Page 6 Trial Cutting Guide Orientation Scorpio Trial Cutting Guide Note: Femoral chamfer cuts cannot be made with the TCG. However, if bone loss is minimal and it is determined that chamfer cuts are required, the Scorpio Total Stabilizer (TS) All-In-One Cutting Block may be used to make chamfer cuts (Lit.
- Page 7 Trial Cutting Guide Orientation (continued) Scorpio Trial Cutting Guide Femoral Offsetting There are several ways to determine the proper femoral offset required. 1) Start with a neutral offset and measure or estimate the distance from the inferior surface of the anterior flange of the TCG to the anterior femur (Figure 11) or, 2) Line up the femoral sizing “C”...
- Page 8 Trial Cutting Guide Orientation (continued) Scorpio Trial Cutting Guide Preliminary Trial Assessment With the joint line restored and the appropriate offset determined, a preliminary trial assessment should be conducted with the trial tibial components in place (Figure 15). Select the appropriate trial tibial insert and place it onto the trial tibia.
- Page 9 Trial Cutting Guide Orientation (continued) Scorpio Trial Cutting Guide Rotation With the knee flexed at 90°, appropriate external rotation can be set by positioning the TCG on the tibial trial insert so that it is seated with no varus/valgus tilt. The transepicondylar axis or Whiteside’s axis can be used to estimate rotation as well.
- Page 10 Trial Cutting Guide Orientation (continued) Scorpio Trial Cutting Guide Trial Assessment Once the TCG is fixed to the femur, a trial reduction may be conducted. Reduce the extensor mechanism and patella. The inferior pole of the patella should rest approximately 14mm above the joint line with the knee in 90°...
- Page 11 Femoral bone Cuts Scorpio Trial Cutting Guide Note: A Stryker 152 saw blade (narrow-thick) or a reciprocating saw blade are recommended for augment cuts and the box cut. Augment Cuts With the TCG properly positioned, visually determine the appropriate posterior and distal resections required (Figure 20 and Figure 21).
- Page 12 Final Trial Assessment Scorpio Trial Cutting Guide A final trial assessment should be conducted with the Scorpio TS trial femoral components to verify the accuracy of the cuts and that the offset has been properly recreated (Figure 26). See the Scorpio Total Revision Knee System Surgical Protocol (Lit.
- Page 13 Quick Pictorial Surgical Technique Reference Scorpio Trial Cutting Guide Tibial Canal Preparation Femoral Canal Preparation Trial Stem Offset Adapter Trial Cutting Guide Assembly Screw Trial Cutting Guide Femoral Canal Insertion Initial Fixation Pin Insertion Joint Line Restoration to Medial Epicondyle...
- Page 14 Preliminary Trial Reduction Fixation Pin – External Rotation Alignment Preliminary Trial Assessment Trial Cutting Guide Offsetting...
- Page 15 Quick Pictorial Surgical Technique Reference Scorpio Trial Cutting Guide ® Posterior Femoral Cuts Final Trial Assessment Distal Femoral Cuts Box Cut...
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Page 16: Sizing Information
Sizing Information Scorpio Trial Cutting Guide Scorpio TS Femoral Component Specifications Resected Intercondylar Condylar Stem Size A/P-Med A/P-Lat Height Box Width Width Height* (mm) (mm) (mm) (mm) (mm) (mm) (mm) (mm) *With end cap Tibial Baseplates** 77-4003 77-4005 77-4007 77-4009... - Page 17 The information presented is intended to demonstrate the breadth of Stryker product offerings. A surgeon must always refer to the package insert, product label and/or instructions for use before using any Stryker product. Products may not be available in all markets because product availability is subject to the regulatory and/or medical practices in individual markets.
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