Daniel Zwerdling

The X-ray of nurse Tove Schuster's spine shows the metal cage and four screws her surgeon used to repair a damaged disk in her back. Terry Cawthorn underwent a similar procedure.
Daniel Zwerdling / NPR

A little-known epidemic has swept through hospitals across the country: thousands of nursing staff suffer debilitating back and arm injuries every year. 

An NPR investigation into the injuries shows most happen as a result of on-the-job incidents. Hospitals can reduce the rate of injury if administrators invest time and money into prevention and training mechanisms.