Traction is often applied to part of the body to negate the effect of the forces causing the deformity. To be an effective traction the traction should act on the deformity and not whole body. To counter the effect on the whole body we need another force that acts in opposite direction.

Let us understand this with an example. Suppose that there is a fracture of shaft of femur bone. Shaft femur fracture would produce a deformity because of pull of the muscles and broken bone. To straighten it one requires to put a pulling force distal to tyhe fracture site. Let us say on holds the foot and pulls the limb so as to correct the deformity. Some of deformity would be corrected but the force of the pull would also pull the body towards the person who is pulling. [Read more...]

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