Illustrative embodiments of a sling apparatus for supporting an arm of a person include a garment to be worn on the torso, and arm support elements mounted on the garment that are configured to support the arm of the person wearing the garment in at least two positions with respect to the torso. Illustrative implementations of the two positions include a first position of the arm having the elbow extended with a shoulder associated with the arm of the person being in a neutral rotation orientation, and a second position of the arm having the shoulder associated with the arm being in an adducted, internal rotation position with the elbow flexed.