These tendons pass back and forth through the sheath as the muscles tighten or relax. Ligaments connect bones to form a joint. Joints are covered by ligaments that form a joint capsule which holds the ends of the bones together and allows movement. The joint also contains lubricating fluid. Some ligaments, such as those in the shoulder, elbow, and knee are shielded from friction by a bursa , a small sac filled with fluid.
Nerves carry messages throughout the body.
The nerves send and receive information to and from the brain. Nerves allow us to see and hear, and also feel pain. This chapter covers the most common injuries that VDT operators experience because of poor ergonomics at work. The symptoms and major risk factors are described for each disorder. Generally, the more time a worker is exposed to these risk factors, the greater the chance of developing one of these injuries.