Which option lists the three basic elements of rating for knee disability?

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Multiple Choice

Which option lists the three basic elements of rating for knee disability?

Explanation:
In rating knee disability, three core areas determine impairment: loss of motion, instability, and muscle wasting around the thigh. First, limitation of flexion and extension reflects the knee’s range-of-motion deficits. Second, instability represents ligamentous laxity or giving-way of the knee. Third, thigh atrophy indicates quadriceps wasting that can worsen knee function. Other options bring in calf atrophy or adduction/abduction, which are not standard elements used for knee impairment rating. Therefore, the best choice lists limitation of flexion and extension, instability, and thigh atrophy.

In rating knee disability, three core areas determine impairment: loss of motion, instability, and muscle wasting around the thigh. First, limitation of flexion and extension reflects the knee’s range-of-motion deficits. Second, instability represents ligamentous laxity or giving-way of the knee. Third, thigh atrophy indicates quadriceps wasting that can worsen knee function.

Other options bring in calf atrophy or adduction/abduction, which are not standard elements used for knee impairment rating. Therefore, the best choice lists limitation of flexion and extension, instability, and thigh atrophy.

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