Aluminum is a more chemically reactive metal than iron and thus should be less corrosion-resistant than steel. However, the actual answer to the above question on which metal is more corrosion resistant is: it depends on your formula chemistry.
Occasionally, a splint may be used to hold the break in place while it heals. If the break has caused the bone fragments to move by a large amount, then finger manipulation may be needed to realign the bone. A splint is then used to hold the bone in place while it heals. Some broken fingers need operations to give them the best chance of healing. This can be due to the break being unstable (ie after manipulation, the bone ends are being pulled out of place by adjacent muscles). What operations may be needed for broken fingers?
Broken Finger Overview. A broken finger means there's a break or crack in one of the finger bones, also known as a fractured finger. A finger may get broken in a fall, car crash, or when throwing a punch. The symptoms of a broken finger are pain, swelling and stiffness. These symptoms are shared with other injuries to the hand, such as sprains or dislocated bones, so it can be hard to tell if there's a fracture. There can be more definite symptoms of a fracture or dislocation, such as part of a finger going in a different direction to normal or looking deformed.