Otto Bock Dynion 3R85 Quick Reference Manual page 5

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Sitting down

(Repeat for readjustment)

Check the stance phase flexion resistance for sitting down again and match

it with the setting for walking down ramps and stairs.

Walking

6.1

(Repeat

for

readjustment)

Since the switching threshold buffer exhibits settling (especially during the

first 10 minutes), it is essential to check again while walking on a level

surface whether short, quick steps are still possible or whether the settings

have to be readjusted. Check the swing phase flexion resistance again and,

if necessary, adjust it in small increments so the lower leg of the prosthesis

does not swing through too far in the dorsal direction and reaches full

extension in time for the next heel strike. During the exercise, also check

whether the swing phase extension resistance setting is still appropriate

and adjust it if necessary. After changing the swing phase extension

resistance, check the switching threshold setting and adjust it if necessary.

After changing the static alignment during dynamic fitting (e.g. increasing

plantar flexion), check the switching threshold setting and adjust it if

necessary.

For the movements shown in the illustration, there is a risk of falling

because they may deactivate the stance phase flexion resistance. Provide

the patient with support (e.g. parallel bars) and have them carefully test at

what load stance phase flexion resistance is deactivated. Then discuss with

the patient how these movements can be avoided or supported.

To avoid a hard ground contact of the prosthetic leg with strong extension

(e.g. curb) immediately followed by knee flexion moment, adjust the stride

length so the movement is carried out with the sound leg.

To avoid a quick, forceful step forward with the prosthetic leg (e.g. jump)

and strong hip extension moment at heel strike immediately followed by

knee flexion moment, adjust the stride length so the movement is carried out

with the sound leg.

To walk backwards safely, make sure that no load is placed on the

prosthetic forefoot with simultaneous hip and knee flexion moment, or walk

with the prosthetic knee joint locked.

6.2

6.3