Overlay Techniques for Determining Leg Lengths | Dr. Jonathan Yerasimides | AHF 2024 скачать в хорошем качестве

Overlay Techniques for Determining Leg Lengths | Dr. Jonathan Yerasimides | AHF 2024

Dr. Jonathan Yerasimides from the Louisville Hip and Knee Institute shares his overlay workflow using OrthoGrid Hip Ai for determining leg lengths. He covers: 1. Transition from Manual to Digital: Dr. Yerasimides discusses being driven to move from an outdated manual method of leg length measurement due to the discontinuation of the paper used for overlays. He has since moved to a modern digital overlay technique . 2. Importance of Pelvis Leveling: Ensuring the pelvis is level is critical before taking measurements. Dr. Yerasimides uses landmarks such as the relationship between the ilioischial line and teardrop to check for pelvic symmetry and levelness in x-rays. 3. Overlay Technique for Accuracy: The digital overlay technique involves comparing preoperative and operative side x-rays, ensuring consistent pelvis rotation and alignment to accurately measure leg length and offset. 4. Adjustments Based on Trial Components: During surgery, trial components are used to determine the optimal leg length and offset. Dr. Yerasimides prefers to avoid increasing offset, particularly in slender females. 5. Comparison and Adjustment: Dr. Yerasimides emphasizes the importance of matching the rotation of the images on operative and contralateral sides for accurate measurements. He adjusts trial components based on overlay analysis and mathematical adjustments to achieve optimal results.