People who suffer from pain around their hip joint may need to have hip replacement surgery. An engineer created the two hip replacement designs that are shown below.Design A features a spherical joint and design B features a cubic joint. Which hip replacement design is best and why? A. Design B is best because the cubic joint can lock into place and hold more weight. B. Design A is best because the spherical joint is able to provide the patient with more movement. C. Design A is best because the spherical joint requires less material and is cheaper to manufacture. D. Design B is best because the cubic joint will be more durable over a longer period of time.
Question
People who suffer from pain around their hip joint may need to have hip replacement surgery. An engineer created the two hip replacement designs that are shown below.Design A features a spherical joint and design B features a cubic joint. Which hip replacement design is best and why? A. Design B is best because the cubic joint can lock into place and hold more weight. B. Design A is best because the spherical joint is able to provide the patient with more movement. C. Design A is best because the spherical joint requires less material and is cheaper to manufacture. D. Design B is best because the cubic joint will be more durable over a longer period of time.
Solution
The best hip replacement design would be B. Design A because the spherical joint is able to provide the patient with more movement. This is crucial as the hip joint is a ball and socket joint and requires a wide range of motion for daily activities such as walking, sitting, and bending. A cubic joint, as in Design B, would limit this range of motion and could lead to discomfort and limited mobility for the patient. Therefore, the ability of the spherical joint in Design A to provide more movement makes it the better choice.
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