1. Contortionists who are double-jointed have ligaments around their joints that are more elastic than normal.

2. Grandma: I didn't know Ben was double-jointed.

3. Special exercises for the remedy double-jointed thumbs, weak knuckles and fingers will be discussed in this paper.

4. The utility model discloses an upper circular cone double-jointed translational artificial lower limb connecting fitting that pertains to the fixed connecting fitting.

5. Indeed, the two functions were intimately linked, for, as Ms Tillyard repeatedly points out, belonging to the royal family meant playing a double-jointed role.