AOSSM 2023 Annual Meeting Recordings no CME-Novel CT-Derived 3D Modeling Assessing Dysplastic Hips Versus Controls Demonstrates Decreased 2D Lateral Center Edge Angle, but not Tönnis Angle, Predicts Decreased 3D Anterolateral Coverage

Novel CT-Derived 3D Modeling Assessing Dysplastic Hips Versus Controls Demonstrates Decreased 2D Lateral Center Edge Angle, but not Tönnis Angle, Predicts Decreased 3D Anterolateral Coverage

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Video Transcription

Video Summary

The video discusses the importance of accurately measuring femoral head coverage in patients with acetabular dysplasia. Previous studies have used 3D measurement techniques, but they have focused mainly on nondisplastic hips and global coverage. The video proposes a new method involving quadrant measurement using anatomic planes and surface area-based coverage. The study compared dysplastic patients who underwent a periacetabular osteotomy (PAO) with a control group of nondysplastic patients. Results showed that dysplastic patients had decreased coverage in the anterolateral, posterolateral, and anteromedial quadrants. The study found that Lateral Center-Edge Angle (LCA) was a better predictor of coverage than tonus angle. Dysplastic patients maintained 100% coverage in the posteromedial quadrant. However, there were limitations in the measurement technique used. Overall, the study highlights the importance of accurate measurement for assessing femoral head coverage in patients with acetabular dysplasia.

Asset Caption

Daniel Kaplan, MD

Keywords

femoral head coverage

acetabular dysplasia

3D measurement techniques

quadrant measurement

periacetabular osteotomy (PAO)