Graf hip ultrasound: learn it on one image
An interactive lesson on the Graf method for infant hip ultrasound: orientation, anatomy, the usability check, the three lines, α and β, and the types, all on one real image.
26 Oct 2026
Don't read about it. Drag it.
Every Radyssey lesson is a real image you can work on. Try it here: drag the bony rim and watch the angle it makes with the baseline decide the hip type.
Start the Graf lessonFree · works on your phone · no sign-up
A schematic hip, not a real scan. It types by α alone; the full lesson adds β and the baby's age.
Lessons
Each lesson is one real image: work through the steps, move the overlays, then test yourself.