external rotation


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Related to external rotation: Internal rotation

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 ?
Impingement-free external rotation is reported to increase with more humeral retroversion and impingement-free internal rotation is reported to increase with less humeral retroversion.
The degree of humeral torsion an individual displays has been shown to be associated with the total range of external rotation as well as the propensity for anterior dislocation (Crockett et al.
However, little is known about the relative contribution of scapular position on the range-of-motion of shoulder external rotation.
At heel contact on the prosthetic limb, amputees activate the gluteal and hamstring muscles to extend their hip, which coincides with generation of an external rotation moment along the long axis of the fully extended lower limb.
2,25,26,32-34,41,44) Because of this increased thickness, LG designs may also be a better solution for medially eroded glenoids as they move the joint line more laterally to better restore its native position, potentially improving joint stability and postoperative internal and external rotation.
to quantify muscle length during abduction and internal and external rotation using a standard and 8[degrees] posterior augmented reverse shoulder (Equinoxe[R], Exactech, Inc.
In combination with a maximal pelvis and trunk external rotation angle of about 80-90[degrees] (Figure 3E, F and 5B) participants in our study were able to transfer more energy from the trunk to the throwing arm (Stodden et al.
The glenoid track describes the width of the contact zone between the humeral head and glenoid at various degrees of abduction and external rotation (Fig.
He recommends building strength in your legs and hips, countering excessive external rotation front turnout by working on internal rotation, and focusing on your alignment.
7-13) For example, baseball pitchers typically demonstrate increased external rotation and decreased internal rotation in their throwing arm compared to the contralateral shoulder.
It is hypothesized that concomitant subscapularis repair will increase the deltoid force required for abduction, the posterior rotator cuff required for external rotation, and the overall joint reaction force with rTSA.
It demonstrated that patients treated through the external rotation protocol experienced significantly reduced recurrence rates of anterior shoulder dislocations.

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