Unlike conventional X-rays, magnetic resonance imaging works with strong magnetic fields, which make it possible to visualize structures not captured by ordinary X-rays. For this reason, MRI has become an indispensable tool, especially in the area of sports medicine, and the number one technique for further clarifying sports injuries. Magnetic resonance also provides imaging with information about soft tissues. Particularly in the joint area, MR images not only show the skeletal system but also ligaments, tendons, articular capsules, cartilages, meniscus and muscles in several layers. Injury related concentrations of fluid after accidents can also be visualized, as in the case of articular effusions and swellings due to bleeding in the surrounding soft tissue. This is a quantum leap in precision diagnostics, which makes MRI the gold standard in sports medicine for injuries of the joints/in the joint region.