4
ENGLISH
FLEX-FOOT
®
BALANCE FOOT SYSTEM (Figure 1)
• Build height: 56-62 mm (2 3/16“ - 2 7/16“)
• Maximum user weight: 136 kg (299 lbs)
• Available in 10 mm (3/8”) heel height
• Available in sizes 21-28 cm
NOTE
: Select foot category according to impact level.
Selection chart is provided in the catalog and on website www.ossur.com
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 heel to toe action can be influenced by
• A-P positioning of foot
• Dorsi-Plantarflexion
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.
Actions
• Shift socket anteriorly.
• Dorsi-flex the foot.
WEIGHT KG
36-44
45-61
62-80
81-97
98-114
115-136
WEIGHT LBS
79-97
98-134
135-176
177-214
215-251
252-300
21
0
1
N/A
N/A
N/A
N/A
22
0
1
N/A
N/A
N/A
N/A
23
0
1
2
N/A
N/A
N/A
24
0
1
2
N/A
N/A
N/A
25
N/A
1
2
3
4
5
26
N/A
1
2
3
4
5
27
N/A
N/A
2
3
4
5
28
N/A
N/A
2
3
4
5
