Repetitive motion can occur in almost any part of the body from a wide range of tasks. Repeated movement of the hand, wrist, arm, or shoulder can lead to injuries. This often happens for workers who type at a computer, scan groceries, work assembly lines, or do certain types of construction, such as hammering nails or using a jackhammer. Anything that requires frequent grasping or pinching, or the same back-and-forth movement, can lead to repetitive motion injuries.