What is the rating for immobility of the hip where the arc of motion is 0-60 degrees?

• A. 10%
• B. 23%
• C. 30%
• D. 40%

Answer: (B)

The rating for immobility of the hip where the arc of motion is measured from 0 to 60 degrees reflects a significant level of impairment. In disability evaluation systems, such as the American Medical Association's Guides to the Evaluation of Permanent Impairment, the loss of range of motion in a joint like the hip can be quantified into specific percentage ratings for impairment.

When the hip can only move from 0 to 60 degrees, this indicates that the individual experiences a substantial restriction in their ability to perform normal movements, which typically include a greater range of flexion. The rating of 23% effectively captures this level of mobility impairment, aligning with established criteria in impairment rating systems that allocate percentages based on the degree of lost function.

This rating is particularly appropriate because it reflects the functional limitations imposed by such a limited range of motion, thus emphasizing the impact on the individual’s ability to engage in daily activities or work-related tasks. The other percentages do not accurately represent this impairment level, making 23% the most suitable choice.