Which of the following exactly matches the permanent disability percentage derived in the Colles fracture grip strength problem?

• A. 13 percent
• B. 14 percent
• C. 17.1 percent
• D. 18.2 percent

Answer: (C)

Translating grip-strength loss after a Colles fracture into a permanent disability percentage using the impairment rating method for the upper extremity.

The problem asks you to measure how much grip strength is lost compared to the uninjured hand and then map that deficit through the impairment rating table to a percentage of whole-person impairment. The Colles fracture can leave the wrist and hand with reduced grip strength, and the official rating scales convert that deficit into a specific disability percentage. In this scenario, the measurements provided in the stem align with exactly 17.1% once the conversion table is applied, so that value is the precise match for the computed impairment.

The other options would require a different amount of grip-strength loss or a different rounding/conversion from the table, which the problem’s data does not produce.