Fitting Advice; Assembly Instructions; Changing The Ankle Ball - Blatchford Navigator NAV22LWW Instrucciones De Uso

8 Fitting Advice

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.
The main function of the snubber is to provide dorsiflexion resistance. Harder snubbers provide
more resistance and softer snubbers provide less resistance.
• 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
Please contact your supplier if it is not possible to achieve a smooth gait after following the
advice above.

9 Assembly Instructions

Be aware of finger trap hazard at all times.
Use appropriate health and safety equipment at all times including extraction facilities.
9.1

Changing the Ankle Ball

1
Alignment Screw
Symptoms
Ankle Ball
5
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. To release ankle ball, remove keel and ankle
assembly from foot shell and remove four
M6x27 socket cap screws (see Fig. 3).
2. Clean the replacement ankle ball (Fig. 1) and
the keel pocket with acetone or a similar
solvent.
3. Align the flats of the male pyramid along the
axis of the keel and rest the ankle ball in the
keel pocket.
4. Insert the alignment screw into the ankle ball
through the hole in the bottom of the keel.
10
Remedy
938247PK1/1-0421