Ballet dancers are susceptible to injury because they are constantly putting strain and stress on their bodies and their feet. A ballet dancer's goal is to make physically demanding choreography appear effortless.The upper body of a ballet dancer is prone to injury because choreography and class exercises require them to exert energy into contorting their backs and hips. Back bends cause the back to pinch, making the spine vulnerable to injuries such as spasms and pinched nerves. More Info below.