Guides 5 Example 17-7

Example 17-7 Rating and Comment

For comparison, the authoritative text from the Guides 5th Edition. Part of our AI and Impairment Rating report.

Impairment Rating: 11% impairment of the whole person.

Comment: Moderate (6%) loss of ankle flexion (Table 17-11); mild (3%) loss of ankle extension; severe (2%) loss of toe motion (Table 17-14). Ankle flexion and extension losses are added (6% + 3% = 9%). Combine these with loss of toe motion by means of the Combined Values Chart (p. 604). The whole person impairment is 11%. The range-of-motion (ROM) method is preferable to the atrophy or muscle testing methods. Comparing impairment values from Tables 17-11 and 17-14 (ROM) with those from Table 17-6 (atrophy), the impairment from a ROM assessment is greater than one for atrophy and more accurately characterizes the individual's impairment. Manual muscle testing is difficult to perform when close to normal because of the lower leg muscles' limited excursion about the ankle and toes when motion is severely restricted.

(from https://ama-guides.ama-assn.org/display/book/9781579470852/c17.xml)