5
PB
ENGLISH
LP VARI–FLEX
®
FOOT SYSTEM (Figure 1)
• Low profile foot module
• Build height: Pyramid adapter 66,1 – 77,2 mm (2 1/2" - 2 7/8")
• Maximum weight 166 kg (365 lbs)
• Available in 10 mm (3/8") and 19 mm (3/4") heel height
• Available in sizes 22-30 cm
Note
: Select foot category according to impact level.
BENCH ALIGNMENT (Figure 2 & 3)
• Fit foot with selected cover.
• Adjust to appropriate heel height (using the shoe).
• Introduce appropriate socket angles flexion/ extension and
abduction/adduction.
• Divide the foot cover length into 3 equal portions.
• The load line should fall at the junction of the posterior and the
middle third portions as shown in the diagram.
DYNAMIC ALIGNMENT
The heel stores energy after initial contact, slowly releasing it at
midstance. The forward momentum generated by this action results in
the toe being loaded for optimum energy release at terminal stance.
The heel to toe action can be influenced by
• A-P positioning of foot
• Dorsi-Plantarflexion
• Heel Stiffness
CATEGORY SELECTION CHART
Please refer to the selection charts below to determine the appropriate
stiffness required according to Össur recommendations.
HEEL STIFFNESS
Heel too soft
Symptoms
• Foot will come to flat position too early (amputee feels he/she is
sinking into a hole).
• Extra energy is required to climb up over the toe.
• Toe will feel too stiff.
• Knee may hyperextend.
Action
• Add polyurethane heel wedge.
• Shift socket anterior (or foot posterior).
WEIGHT KG
45-52
53-59
60-68
69-77
78-88
89-100
101-116 117-130 131-147 148-166
WEIGHT LBS
99-115
116-130 131-150 151-170 171-194 195-221 222-256 257-287 288-324 325-365
Low
Impact Level
1
1
2
3
4
5
6
7
8
9
Moderate
Impact Level
1
2
3
4
5
6
7
8
9
N/A
High
Impact Level
2
3
4
5
6
7
8
9
N/A
N/A
