Dynamic Adjustment - Blatchford Avalon K2-VAC Instructions D'utilisation

6.4

Dynamic Adjustment

Adjustment of the hydraulic valves
The user should experience the ankle moving smoothly with the body through the gait cycle
with no additional effort required by the user to overcome the hydraulic resistance of the ankle.
During this procedure the user should walk at normal speed, in a straight line on a level surface.
PF
1st
Adjust the Plantar
flexion valve to
reduce resistance
(counterclockwise)
DF
2nd
Adjust the
Dorsiflexion
valve to increase
resistance
(clockwise)
Guidance
Following dynamic adjustment, trial the foot/ankle on ramps and stairs. Ensure the user is
comfortable with the kind of terrain he/she may normally be expected to encounter. If the user
reports any issues with comfort, usability or range of movement of the ankle, adjust accordingly.
Upon walking, does the user experience foot slap?
Yes
Does the user find the
heel too hard?
Transfer should be
smooth.
Does the user feel as if
they are walking uphill?
Does the user feel as if
Yes
they are being thrown
forwards through
13
No
No
Yes
No
stance?
No
Yes
Adjust the Plantar
Flexion valve to
increase resistance
(clockwise)
Adjust the
Dorsiflexion
valve to reduce
resistance
(counterclockwise)
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