traction (trak´shun)

1. The act of drawing or pulling, as by an elastic or spring force. 2. A pulling or dragging force exerted on a limb in a distal direction. [L. tractio, fr. traho, pp. tractus, to draw]
axis t. rarely used procedure to apply t. upon the fetal head in the line of the birth canal by means of axis t. forceps.
Bryant's t. t. upon the lower limb placed vertically, employed especially in fractures of the femur in children.
Buck's t. Buck's extension
external t. a pulling force created by using fixed anchorage (e.g., a headcap or bed frame) outside the oral cavity; principally used in the management of midfacial fractures.
halo t. application of skeletal t. to the head by means of a halo device.
intermaxillary t. maxillomandibular t
internal t. a pulling force created by using one of the cranial bones, above the point of fracture, for anchorage.
isometric t. t. in which the length of the limb does not change.
isotonic t. t. in which the amount of force does not change.
maxillomandibular t. a pulling force developed by using elastic or wire ligatures and interdental wiring or splints, or both.intermaxillary t;
Russell t. an improvement of Buck's extension that permits the resultant vector of the applied traction force to be changed, for fractures of the femur.
Sayre's suspension t. spinal t. obtained by vertical suspension of the patient by means of a head halter.
skeletal t. t. pull on a bone structure mediated through pin or wire inserted into the bone to reduce a fracture of long bones.skeletal extension;
skin t. t. on an extremity by means of adhesive tape or other types of strapping applied to the limb.


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