Product Information & Procedure Wall Chart

Transcription

1 Partial Knee System Product Information & Procedure Wall Chart Reproducible, balanced approach to partial knee replacement

2 Developed by Dr. Gerard A. Engh Dr. Engh is renowned for his expertise in developing successful knee replacement systems and for his outstanding clinical outcomes in both partial and total knee arthroplasty in over 30 years as a surgeon and as a mentor of total knee specialists. The Mirror Partial Knee System was developed by Dr. Engh to provide surgeons with a procedure that will help surgeons attain optimal balance using proprietary instrumentation. The Mirror System has already been used in over 1000 cases in centers of excellence across the United States. Implant utilizes an UHMWPE tibial bearing component manufactured from virgin compression-molded GUR 1020 resin and sterilized by ETO UHMWPE tibial bearing components are machined from non-cross-linked UHMWPE for optimum performance (1) Femoral component made cobalt-chromium alloy and tibial baseplate made of titanium alloy Partial Knee System Reproducible, balanced approach to partial knee replacement Carroll, M, Knee Wear Testing of ADVANCE Medial-Pivot UHMWPE Tibial Bearings: Effects of Material Selection, Manufacturing, and Sterilization Methods, 2005

3 Partial Knee System Taking the balanced approach to partial knee replacement, inherent in the instrumentation. The Balanced Approach to PKA Surgery It is all about ligament balance: A balanced knee is essential to clinical success and patient satisfaction The Mirror System provides the surgeon with a unique and reproducible approach to optimize balance in the operative knee Knee stability and implant position are addressed by design, utilizing the instrumentation provided Inherent In The Instrumentation Balancer provides optimal ligament balance prior to preparing the femur Femoral preparation is completed with the knee in balance Implant size selection is after the bone is prepared; to help ensure balance through flexion to extension Genesis of Design Created by Gerard A. Engh, MD, a recognized, respected researcher and pioneer of knee replacement procedures Addresses the well-understood limitations of today s traditionally designed implants and techniques, which can still leave ligaments too loose or too tight Based on a unique, proprietary ligament-guided surgical technique, which reestablishes natural knee motion, balance and stability Offers a strong value proposition for health systems and surgery centers, reducing procedure times and costly procedure add-ons Developed with joint and sports medicine surgeons in mind, providing an easy-to-adopt and repeatable surgical technique for the modern healthcare era

4 Step 1 Tibial Resection 4-8 Posterior Slope Step 2 Size Tibia and Check Flexion Extension Insert tibial trial, starting with 8mm thickness. 0 Varus/Valgus Slope Step 3 Insert and Impact Adjustable Guide on Tibia Step 4 Balance Joint Place shim on bottom of the Balancer. Balancer Insertion: Slide between rails of Adjustable Guide.

5 Step 5 Determine Position of Femoral Component Using the Positioner, draw a line along the femoral condyle, perpendicular to tibial resection, marking the position of the femoral component. Positioner Step 6 Create Femoral Groove Advance cutter into Balancer. WITHOUT power, advance tip of cutter on top of blue line, throughout the range of motion, confirming cutter path. With knee at 120, step on foot pedal, advance Cutter into Balancer and into femoral condyle, rotate cutter clockwise to lock. Flex slightly and SLOWLY range knee to full extension. ENSURE cutter tip remains on line from full flexion through extension.

6 Step 7 Transfer Shim Plate Move shim from Balancer... Step 8 Plane Femoral Condyle Insert Planer base into newly created groove. Using mallet, gently tap Planer base posts to fully seat base in posterior condyle. to Planer base. Advance cutter into center of Planer cutting block, at position 1, labeled on top of block. Rotate cutter plus block assembly 180, into positions 2-4. Slightly flex knee and bring through full extension with cutter running. Similar to Step 6, slightly flex knee and bring through full extension with cutter running. For positions 5 and 6, unlock cutter and sweep condyle ridge created in Steps 1-4, which are medial and lateral to center groove, with cutter in angled position.

7 Step 9 Femoral Sizing and Prepare for Femoral Pegs Select the femoral drill guide that is most stable on the prepared femur. Select size that conforms best to shape of the prepared condyle. Do not size for maximum coverage. Step 10 Implant Trials Drill or punch is provided to prepare for tibial baseplate pegs. Step 11 Cement Implants

8 Partial Knee System cayennemedical.com Reproducible, balanced approach to partial knee replacement 2016 Cayenne Medical, N. 92nd St., Suite 101, Scottsdale AZ 85260, Rev B