Can Some Explain Ankle Flexion?

[lostinthailand]

Regarding the rating criteria below, I'm failing to understand why higher range of motion gets a higher rating. Since it's surely worse to have a lower range of motion, can someone please explain this?

Thanks,

LIT

5270 Ankle, ankylosis of:

In plantar flexion at more than 40°, or in dorsiflexion at more than 10° or with abduction, adduction, inversion or eversion deformity 40%

In plantar flexion, between 30° and 40°, or in dorsiflexion, between 0° and 10° 30%

In plantar flexion, less than 30° 20 %

[Philip Rogers]

Just guessing but maybe a larger ROM shows a lack of stability, but other than that you got me.

pr

[Byte187]

Your thumbnail is referring to ROM measurements, but 5270 is referring to ankylosis. Two completely different things.

ROM is range of motion, and ankylosis is the degree at which the ankle is stuck in a bent or crooked position.