motion (redirected from motions)

mo·tion (mshn)

n.

1. The act or process of changing position or place.

2. The manner in which the body or a body part moves.

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motion,

n movement

motion barrier,

n any limitation to motion.

motion of the spine, physiologic,

n principles of thoracic motion that detail movements of the vertebrae in relationship to that of the vertebral column as a whole. When the spine is in a neutral position, coupled side-bending and rotation motions for a group of vertebrae happen in different directions. When the spine is bent backward or forward, these motions happen in the same direction.

motion, accessory joint,

n See motion, secondary joint.

motion, bucket handle rib,

n the head-ward movement of the lateral sides of the ribs during respiration; occurs mainly in the lower ribs. See also axis, anteroposterior rib axis, and axis of rib motion.

motion, caliper rib,

n motion of ribs 11 and 12; characterized by moving as a single joint.

motion, iliosacral,

n motion of the ilium through the sacrum along an inferior transverse axis, influenced by the movements of the pelvis, hips, and lower extremities, as in walking.

motion, inherent,

n the spontaneous motion that characterizes all cells, tissues, etc. in the body.

motion, intersegmental,

n the relative motion between two adjacent vertebrae, with the upper vertebra in the pair described as moving upon the lower vertebra.

motion, passive,

n motion induced by the therapist or physician while the patient relaxes and exerts no effort.

motion, physiologic,

n any change in the position, within a normal range, of anatomic structures.

motion, pump handle rib,

n the head-ward movement of the anterior part of the ribs during respiration; occurs mainly in the upper ribs. See also axis of rib motion.

motion, range of,

n the movement available to a joint. Full range of motion can be restricted by shortened muscles, connective tissue injuries, scar tissue or adhesions, pain, and other conditions. Also called
ROM.

motion, secondary joint,

n passive or involuntary joint motion. Also called
accessory joint motion.

motion, segmental,

n movement between two adjacent vertebrae; described through displacing a point at the upper front aspect of the superior vertebra.

motion, translatory,

n movement of a body part along an axis.

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motion,

n envelope of the three-dimensional space circumscribed by border movements and by occlusal contacts of a given point of the mandible. Also called
movement space. See also movement, border, posterior.