Girl, 9, gets ‘Frozen’-themed prosthetic arm

Nine-year-old Karissa Mitchell, who was born without a right hand and most of her wrist, was surprised with a custom-made prosthetic arm developed by students from Siena College. The group used a 3D printer with help from the global nonprofit Enabling The Future. The prosthetic sports snowflakes and a crown above Karissa’s name. (Run time: 1:35)