Last updated on July 6 2022
Description
The acetabular angle is a measurement used when evaluating the potential development of hip dysplasia, which is measured between Hilgenreiner's line and a line parallel to the acetabular roof. Angles above 47° are seen in patients with acetabular dysplasia. In the adult, where tri-irradiated cartilages are fused and therefore not apparent, the lower edge of the pelvic tear is used instead. This, of course, displaces the lower horizontal line and changes the value of the angle.
This procedure is used to evaluate the potential of hip dysplasia development.
Measurements
The measurements made by the procedure are displayed in the image:
- Acetabular Angle (or sharp angle) (AA): the angle formed between the acetabular’s line and the Hilgenreiner’s line.
Auxiliary references
To show this procedure, PeekMed® needs additional references:
- Hilgenreiner’s line: a horizontal line through the teardrops (or triradiate cartilage in children) of the acetabulum;
- Acetabular line: line passing through the lateral edge of the acetabulum and the teardrops;
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.