How can I recover from a broken arm faster?

Follow directions. Your orthopedic surgeon has years of training and experience treating these injure. The number one issue for delaying healing is non compliance. Oh and if you smoke stop and try to maintain good health and diet.
Stay healthy. The best way to heal from a broken arm is the following: -stay healthy and treat any chronic health conditions -stop smoking if you do -adequate calcium intake (not excessive) -stick to your doctor's treatment plan whether it be casting, splinting, immobilization, or surgery.