BAK - Disamat 801 Hot Air Welding Machine. BAK - Disamat 801 The welding machine for â¦more
The different grades of the Risser sign give a measure of bone maturity and thus of the skeletal growth to be expected. In Europe, a scale ranging from Risser 0 to Risser 5 defines the grades from beginning ossification to complete fusion of the apophysis to the iliac bone. In the USA, 4 grades are defined.
Risser's sign is a measures the growth left in the spine-this may help to determine the potential for progression of scoliosis. Grading (based on iliac crest divided into 4 quadrants). : 1  25% iliac apophysis ossification Anterior Superior iliac spine (anterolateral) Seen in prepuberty or early puberty.