Whether a cast or a splint is a better option for you is completely dependent on your injury. Though splints don’t provide as much support and protection, they are easier to take on and off and adjust if your limb becomes swollen. When choosing if a splint or a cast is the most effective treatment plan for your broken bone or fracture, your doctor will take into account a few factors. They will make the decision based on the amount of swelling, the type of break, the location of your injury, your day to day lifestyle, and age.