extension

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extension

 [ek-sten´shun]
1. the movement by which the two ends of any jointed part are drawn away from each other.
2. a movement bringing the members of a limb into or toward a straight condition.
Buck's extension a temporary type of lightweight traction applied to the distal end of a fractured lower limb; the foot of the bed is raised so that the body makes counterextension; often used to reduce muscle spasm.
Buck's extension.
nail extension extension exerted on the distal fragment of a fractured bone by means of a nail or pin driven into the fragment.

ex·ten·sion

(eks-ten'shŭn), [TA]
1. The act of bringing the distal portion of a joint in continuity (although only parallel) with the long axis of the proximal portion.
2. A pulling or dragging force exerted on a limb in a distal direction.
3. The movement produced by contraction of one or more extensor muscles; it generally results in the straightening of a limb; axial traction that generally lengthens a limb or straightens the trunk; the opposite or antagonistic movement of flexion.
4. Obsolete term for traction.
[L. extensus, past part. of extendere, to stretch out, extend]

extension

/ex·ten·sion/ (-shun)
1. the movement by which the two ends of any jointed part are drawn away from each other.
2. the bringing of the members of a limb into or toward a straight condition.

nail extension  extension exerted on the distal fragment of a fractured bone by means of a nail or pin (Steinmann pin) driven into the fragment.

extension

(ĭk-stĕn′shən)
n.
1.
a. The act of straightening or extending a limb.
b. The position assumed by an extended limb.
2. Medicine The application of traction to a fractured or dislocated limb to restore the normal position.

ex·ten′sion·al adj.

extension

[iksten′shən]
Etymology: L, extendere, to stretch
a "straightening" movement allowed by certain joints of the skeleton that increases the angle between two adjoining bones, such as extending the leg, which increases the posterior angle between the femur and the tibia. Compare flexion.

extension

An adult sex toy placed around an erect penis which extends its length.

extension

The making larger of a thing Imaging The broadening of a lesion–eg, a cancer or focus of infection as seen on an imaging technique Orthopedics A ↑ in the angle between parts of a joint; a straightening of a flexed limb Terminal care See Extension of life.

ex·ten·sion

(eks-ten'shŭn) [TA]
1. The act of bringing the distal portion of a joint in continuity with the long axis of the proximal portion.
2. A pulling or dragging force exerted on a limb in a distal direction.
3. To straighten a joint (i.e., the elbow is in extension when fully straightened).
[L. extensus, past part. of extendere, to stretch out, extend]

extension

Straightening at a joint. The opposite of flexion.

extension,

n movement of a limb to increase the angle of the joint. Some joints (at the wrist, in the neck) are able to hyperextend.
extension, bilateral sacral,
n condition in which the sacrum has rotated around a central transverse axis so that the sacral base moves posterior relative to the bones of the pelvis. Also called
sacral base posterior.
extension, craniosacral,
n the movement of the cranial rhythmic impulse, characterized by anterior motion of the sphenobasilar symphysis and posterior motion of the sacrum.
extension, regional,
n straighten-ing of spinal region in the sagittal plane. Also called
Fryette regional extension.
extension, sacral,
n posterior movement of the sacral base relative to the hip bones.
extension, SBS,
n rotation of the occipital and sphenoid bones in opposing directions about parallel transverse axes, thus resulting in inferior positioning of the basilar portions of both bones and a decrease in the posterior convexity between them. Also called
sphenobasilar synchondrosis (symphysis) extension.
extension, unilateral sacral,
n condition involving a one-sided superior sacral shear that results in a shallow sulcus and an ipsilateral upward-forward inferolateral sacral angle.

ex·ten·sion

(eks-ten'shŭn) [TA]
1. The act of bringing the distal portion of a joint in continuity with the long axis of the proximal portion.
2. A pulling or dragging force exerted on a limb in a distal direction.
3. To straighten a joint.
[L. extensus, past part. of extendere, to stretch out, extend]

extension

1. the movement by which the two ends of any jointed part are drawn away from each other.
2. a movement bringing the members of a limb into or toward a straight condition.

nail extension
extension exerted on the distal fragment of a fractured bone by means of a nail or pin (Steinmann pin) driven into the fragment.