Normal and variant anatomy of the elbow on magnetic resonance imaging.

Magnetic resonance imaging (MRI) provides excellent delineation of the bones of the elbow and the surrounding soft tissue structures. The components of the elbow can be divided into osseous structures, the joint capsule and ligaments, muscles and tendons, and nerves. In this article, the authors review the normal anatomy and appearance of these structures on MRI as well as the anatomic variants that should be recognized and distinguished from pathologic entities.