The table that follows shows the suitable spring stiffness of the prosthetic
foot, matching the patient's body weight and activity.
Spring stiffness relative to body weight and activity level
Body weight [kg]
Normal
High
44 to 52
1
2
53 to 59
2
3
60 to 68
3
4
69 to 77
4
5
78 to 88
5
6
89 to 100
6
7
101 to 116
7
8
117 to 130
8
9
131 to 147
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2.3 Environmental conditions
Storage and transport
Temperature range –20 °C to +60 °C (–4 °F to +140 °F), relative humidity 20 % to
90 %, no mechanical vibrations or impacts
Allowable environmental conditions
Temperature range:
–10 °C to +45 °C (14 °F to 113 °F)
Moisture:
relative humidity: 20% to 90%, non-condensing
Chemicals/liquids:
fresh water as dripping water, occasional contact with salty air
(e.g. near the ocean)
Solids:
dust
Prohibited environmental conditions
Chemicals/moisture:
salt water, perspiration, urine, acids, soapsuds, chlorine water
Solids:
dust in high concentrations (e.g. construction site), sand, highly hygroscopic
particles (e.g. talcum)
2.4 Lifetime
Prosthetic foot
Depending on the patient's activity level, the maximum lifetime of the product
is 3 years.
Footshell, protective sock, functional ring and O-rings
The product is a wear part, which means it is subject to normal wear and
tear.
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