3D Printed casts have appeared as one of the useful tools of the technology since the designs are lightweight and the plastic features round openings allow for more breathability. These openings make it easier for doctors to access the broken limb, as well as making daily tasks more manageable for the patient. Comparatively, 3D Printed Cast Design helped with determining skin health, and it made re-dressing wounds easier. Companies like Xkelet, based in Spain, have gained recognition for their cast whose clinical trial will be starting in September. However, their prices continue to be cause of worry.
Source: http://www.dailydot.com/debug/3d-printed-casts-modern-expensive/