Excerpt: Look around any worksite. Whether we’re working with a simple tool like a hammer, or a piece of complex machinery, our hands, wrists, and fingers help us get the job done. We need to be careful though. Every day we face a variety of hazards. Machinery that can pull and smash a hand. Tools with the potential to rip through protective gloves, and coercive materials that can eat through skin. Hazardous situations come in all shapes and sizes, if we’re not on the lookout, these situations can lead to real trouble. Every year thousands of people suffer injuries to the hands, wrists, and fingers. We’ve all felt the initial pain of an injury. But with any accident pain is just the beginning. With a serious cut, for instance, there is often a long period of recuperation filled with extensive sessions of physical therapy. Even after the wound has healed, it can still take several weeks before you’re back to normal. Reducing the risk of accidents can be simple, but it takes an effort. We need to take special care of our hands. They’re tool valuable too lose. To help us understand how our hands can be injured we should take a look at how they work.