An ergonomic assessment of the airline baggage handler

Figure 2.1 Principle muscle groups of the lower and upper back.The "lower back" is most commonly described as the area from the thorax to thepelvis on the dorsal (back) aspect of the body. The important anatomic structures includelumbar vertebrae, facet joints, lower back muscles and ligaments, vertebral discs, spinalchord and nerves (Figure 2.2).