It is quite uncomfortable when the hand is placed in a cast. Most casts are huge and sometimes get smelly and itchy when used for a long time.
Jake Evill, victim of a fracture needed to be in a cast for a prolonged period. Feeling extremely uncomfortable, he came out with a solution for his own problem.
He developed a 3D-printed brace that is capable of taking the shape of the contour of his arm. He called it the Cortex and made it washable, well ventilated, light weight and recyclable. He seems to have catered to all the problems faced in a conventional cast.
After doing great research on the inner tissue of a human bone, Evill said, "It was this honeycomb structure that inspired the Cortex pattern because, as usual, nature has the best answers. This natural shape embodied the qualities of being strong whilst light just like the bone it is protecting within."