A Carter arm block is a block of foam with cutouts for resting the arm in an elevated position. Your doctor may advise using it after a surgery, fracture, or injury to your arm, wrist, or hand. It can also be used after surgery to remove a breast (mastectomy). You can use it with either arm. It comes in both adult and child sizes.
It may also be called a Carter pillow, a Carter arm pillow, or an arm elevator.