what is lateral flexion
Adorable animal families that will make you aww. Lateral flexion is the anatomical term for the movement of bending sideways at the waist. Alternately known as side bending or lateral trunk flexion, it can refer to movement of the entire spine in a lateral direction, of the neck only, or of a segment of the spine.his is because lateral flexion affects entire portions of the spine, not just two adjacent vertebrae. Side bending from the waist involves movement in both the thoracic and lumbar spine; laterally flexing the head requires the involvement of most of the cervical spine.