external rotation

(redirected from Rotate laterally)

external rotation

turning outwardly or away from the midline of the body, such as when a leg is externally rotated with the toes turned outward or away from the body's midline.

external rotation

Lateral rotation Biomechanics The act of turning about an axis passing through the center of the leg; ER of the leg occurs with closed chain supination; the talus acts as an extension of the leg in frontal and transverse planes

ex·ter·nal ro·ta·tion

(eks-tĕr'năl rō-tā'shŭn)
Movement of a joint, around its long axis, away from the midline of the body.
Synonym(s): lateral rotation.
Figure 1: The sites of the main nerve centres and descending pathways in the brain and spinal cord that control voluntary movement, represented in diagrammatic sections.

external rotation

a movement at a joint that causes rotation of a limb or part of a limb around its long axis away from the midline of the body, e.g. external rotation at the elbow turns the forearm outwards, bringing the palm of the hand to face forwards, or the whole arm can be externally rotated at the shoulder; the whole leg can be externally rotated from the hip but the knee does not allow external rotation of the lower leg alone. Opposite of internal rotation. Figure 1.
References in periodicals archive ?
Approximately 1 minute into transit, the power wheelchair appeared to rotate laterally into the aisle space (Figures 4 and 5).
While the orientation of metatarsals could have been achieved through compression of the pedal elements in situ, the evidence for movement and rotation of the cranium may be more easily explained if the legs moved laterally post-depositionally, allowing the skull to shift forwards and rotate laterally as the thorax compressed.