Fitting Advice - Blatchford Navigator NAV22LWW Instructions D'utilisation

7 Fitting Advice

During dynamic alignment the user can experience gait abnormalities. Use this table to correct
some common gait abnormalities.
Gait Abnormality
• Sinking at heel strike
• Foot slap
• Rapid transition from heel strike through
stance phase
• Difficulty controlling heel action (e.g. the
foot jars into mid-stance)
• Foot feels too rigid
• Drop-off
• Feels like walking downhill
• Feels like walking uphill
8 Changing the Ankle Ball
The main function of the ankle ball is to provide plantar flexion resistance. Harder ankle balls
provide more resistance and softer ankle balls provide less resistance.
Alignment Screw
Ankle Ball
5
Action
a. Confirm A–P alignment and heel
height accommodation.
b. Fit a harder ankle ball.
a. Confirm A–P alignment and heel
height accommodation.
b. Fit a softer ankle ball.
a. Confirm A–P alignment and heel
height accommodation.
b. Fit a harder snubber.
a. Confirm A–P alignment and heel
height accommodation.
b. Fit a softer snubber.
1. Clean the ankle ball and the keel pocket with
acetone or a similar solvent.
2. Align the flats of the male pyramid along the
axis of the keel and rest the ankle ball in the
keel pocket.
3. Insert the alignment screw into the ankle ball
through the hole in the bottom of the keel.
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