I broke my upper humerus bone in April. The orthopedist was unable to cast it. So, I was in a sling doe six weeks. The doctor dislikes the full sling that they gave me at the hospital and recommended a wrist cuff sling. This is a imitation but it helped. It allowed for me to, when I was finally able, keep my hand and finger from stiffness. Then after a few weeks move my elbow. All of this allows for easier physical therapy results.