Answer :
Final answer:
a) Buck's Traction is one of the most common orthopedic mechanisms by which pull is exerted on the lower extremity with a system of ropes, weights, and pulleys.
Explanation:
Traction is a medically used mechanism that involves exerting a pull on the lower extremity of the body using a system that comprises of pulleys, ropes, and weights. The main purpose of this system is to apply a sustained force to areas of the body such as muscles and joints in order to correct abnormalities, limit movement, or to relieve pressure.
In the case of a Buck's traction, it is used primarily for lower extremity fractures, hip and lower spine disorders. The force system works in a way that the pulley system multiplies the force applied. The exerted force is an integral multiple of tension if the pulleys are frictionless. If a combination of pulleys are utilized, it can apply greater tension providing better traction effect. As seen in the examples provided, systems with more pulleys could apply greater forces, up to four times the original force. By managing the number of pulleys, the force applied can be controlled and optimized for the patient's comfort and healing front.
The answer is option A.
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