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

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 main idea is that impairment ratings for immobility are assigned from a table that converts how much the joint can move (the arc of motion) into a percentage of impairment. For the hip, tightly focused ROM loss is measured in degrees, and a very limited arc signals a higher impairment. An arc of 0 to 60 degrees represents a substantial loss of hip motion, and in the standard rating schedule this level of limitation corresponds to about 23% whole-person impairment. In other words, the degree of motion loss is directly translated into a fixed impairment percentage, and 0–60 degrees falls at the 23% mark. If motion were less limited, the percentage would be lower; if it were more restricted, the percentage would be higher according to the table.

The main idea is that impairment ratings for immobility are assigned from a table that converts how much the joint can move (the arc of motion) into a percentage of impairment. For the hip, tightly focused ROM loss is measured in degrees, and a very limited arc signals a higher impairment. An arc of 0 to 60 degrees represents a substantial loss of hip motion, and in the standard rating schedule this level of limitation corresponds to about 23% whole-person impairment. In other words, the degree of motion loss is directly translated into a fixed impairment percentage, and 0–60 degrees falls at the 23% mark. If motion were less limited, the percentage would be lower; if it were more restricted, the percentage would be higher according to the table.