Last updated on August 1 2024
Description
The Central Edge Angle (CEA) is a measurement in the pelvis which is the angle formed by Perkin line and a line from the center of the femoral head to the lateral edge of the acetabulum. It can be used to assess for conditions such as developmental dysplasia of the hip.
This procedure is only available in the AP view.
Measurements
- CEA: the angle between the Perkin line and Femoral head to the outer edge line.
Auxiliary references
- Diameter of femoral head: a line between the center of femoral head and lateral femoral head. A circle is formed between these two points.
- Hilgenreiner’s line: a horizontal line through the triradiate cartilage of the acetabulum;
- Perkin line: is a line drawn perpendicular to Hilgenreiner line, and goes through the center of femoral head
- Femoral head to the outer edge: a line drawn from the center of the femoral head to the acetabulum back wall
How to perform
After selecting this procedure in the sidebar, you must mark the points to conclude it. To see the caption of each point you need to click on this button 
Beware: You can change the position of the points at this stage or later. To do this, simply click on each handle with the left mouse button and move them to the most suitable position.
This procedure has no advanced configuration.