4
Heel Bumper Installation
The foot is supplied with two heel
bumpers: 40A durometer is standard
and pre-installed. If desired, the “Firm”
bumper (60A) can be installed to
stiffen the heel performance.
1.
Pull the pylon and foot plate
apart. Insert a piece of plastic to
hold parts open.
2.
Remove the Heel Bumper by pulling it up and away from the heel lock.
3.
Install the new bumper and ensure the Lock Pins engage the Heel
Bumper properly.
4.
When the desired bumper density is determined, remove the bumper
and apply Superglue to the Heel lock and reinstall the bumper
Static Alignment - Sagittal Plane
Before aligning, the initial heel height should be established. Using the
adapter surface for reference, the AllPro employs a 2° posterior lean
(Figure 1) with a 10 mm (3/8 in.) heel block to preload the anterior keel. When
the patient is weight bearing, the adapter surface should settle to a neutral
or level position.
Transtibial Frontal Plane Alignment
A plum line from the bisection of the socket
at the proximal brim in the frontal and
sagittal plane should bisect the ankle pyramid
(Figure 1). The foot may be slightly inset 1 – 12
mm depending on the limb length. Most
runners prefer a wider base of support with
the foot slightly lateral to the distal bisection
7 – 13 mm. The longitudinal axis of the foot will
be externally rotated approximately 5 – 8° by
aligning the medial border of the foot with the
line of progression (Figure 2).
Figure 3
Apply Glue
Pin Lock
Heel Lock
Heel
Bumper
Figure 1
2°
Содержание AllPro Foot
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