The anatomical “core”: a definition and functional classification

The anatomic core is important in the functional stabilization of the body during static and dynamic movement. This functional stabilization is an integral component of proprioception, balance performance, and compensatory postural activation of the trunk muscles. The structures that define the core and its functions are presented here. By understanding the contributing components and responsibilities of the core, it is hoped that the physician will have a better understanding of core function as it relates to the performance of their patients' activities of daily living.