Introduction-to-the-Ilizarov-Fixator.pptx

IlIzarov indtroduction by Dr.rama kartheek

1. Introduction to the Ilizarov Fixator The Ilizarov fixator is a surgical device used in orthopedics to treat complex bone fractures and deformities. It utilizes a framework of circular rings and tensioned wires to stabilize and gradually correct bone structures. by Dr. Ram Karthik

2. History of the Ilizarov Fixator 1 1950s Developed by Dr. Gavriil Ilizarov in the Soviet Union to treat complex bone and soft tissue injuries. 2 1980s Ilizarov's methods gain recognition in the West, leading to widespread adoption and refinement of the technique. 3 Present Day The Ilizarov fixator is now used globally for limb lengthening, deformity correction, and complex fracture management.

3. Principles of the Ilizarov Fixator Gradual, controlled bone distraction and lengthening Preservation of blood supply and soft tissues Allows for complex deformity correction and limb alignment Incorporates dynamic tension on the bone segments Promotes new bone formation at the distraction site

4. Components of the Ilizarov Fixator The Ilizarov fixator consists of several key components that work together to provide stable fixation and enable gradual bone distraction or compression. Rings of varying sizes are used to encircle the limb and provide a rigid framework for the frame. Tensioned wires connect the rings and are tightened to create a stable construct. Half-pins are inserted into the bone and attached to the rings to provide additional stability.

5. Rings and Wires Rings Circular frames that provide the main structural foundation. Tensioned Wires High-strength wires that connect to the rings and bones. Connectors Secure the wires to the rings and allow for adjustments.

6. Tensioned Wires 1 Wire Tensioning Applying precise tension to wires 2 Mechanical Advantage Leveraging forces for stability 3 Compression-Distraction Controlled bone lengthening The Ilizarov fixator relies on a network of thin, tensioned wires to provide rigid stabilization and controlled manipulation of bone segments. These wires are tensioned using specialized tensioning devices, allowing for precise adjustments and a high degree of mechanical advantage. This enables the surgeon to carefully manage compression, distraction, and other forces acting on the bone during the healing process.

7. Half-Pins Half-pins are inserted through the skin and into the bone. They provide external stabilization and support for the Ilizarov frame. Half-pins are positioned in a parallel or divergent manner. Careful planning ensures optimal pin placement for maximum stability.

8. Threaded Rods Structural Support Provide rigid stability to the Ilizarov frame Length Adjustment Allow lengthening or shortening of the frame Compression/Distraction Enable controlled compression or distraction of bone segments

9. Clamps and Connectors Versatile Clamping Secure wires and half-pins with adjustable clamps Modular Design Connect rings and rods using various connector types Customizable Configurations Tailor the frame to the patient's anatomy and needs

10. Preoperative Planning Careful preoperative planning is essential for successful Ilizarov fixator application. 3 Days Minimum time required for preoperative planning prior to surgery. 6 Parameters Key factors to consider in preoperative planning. Radiographic assessment of the affected limb is crucial to determine the appropriate Ilizarov frame configuration. Detailed preoperative sketches help visualize the frame design and wire/half-pin placement.

11. Wire and Half-Pin Placement Precise placement of wires and half-pins is critical for Ilizarov fixator stability. Wires are inserted at oblique angles to create a sturdy, tensioned construct. Half-pins are inserted through the bone cortex to provide additional fixation points.

12. Adjustments and Modifications Adjusting the Frame Carefully adjust the position and tension of the wires and rods to maintain proper alignment and tension. Modifying the Design Add or remove components as needed to adapt the fixator to the patient's specific needs and condition. Ongoing Monitoring Regularly assess the fixator and make necessary adjustments to ensure proper healing and bone regeneration. Radiographic Assessment Use X-rays to closely monitor bone alignment and regeneration, guiding adjustments to the fixator.

13. Case Studies Tibial Deformity Correction Ilizarov fixator used to gradually correct severe valgus deformation of the tibia in a 24-year-old patient. Limb Lengthening Ilizarov technique employed to lengthen the femur by 5 cm in a 12-year-old boy with congenital limb length discrepancy. Nonunion Treatment Ilizarov frame applied to treat a complex tibial nonunion in a 45-year-old patient following a motorcycle accident. Bone Transport Ilizarov bone transport used to fill a large tibial defect caused by chronic osteomyelitis in a 32-year-old man.

14. Conclusion Recap the Key Principles Review the essential components and mechanics of the Ilizarov fixator. Highlight Versatility Showcase the wide range of applications and advantages of the Ilizarov system. Emphasize Patient Outcomes Discuss the remarkable results and improved quality of life for patients. Encourage Further Exploration Inspire the audience to learn more about this innovative surgical technique.