1B1-2 Meridium
Reference number | 1B1-2 |
User Weight Capacity | 125 kg |
Type of Feet | Microprocessor controlled |
Based closely on the natural human anatomy, the Meridium mechatronic prosthetic foot is movable not only in the ankle area, but also in the midfoot and toe region thanks to its additional axes.
- Near-natural replication of the human foot thanks to polyaxial construction and extensive range of motion
- Automatically adapts to slopes and uneven surfaces in real time
- Intuitive Stance permits stable standing on level ground – and even on slopes
- Reduced risk of stumbling and falling thanks to increased ground clearance in the swing phase
- Lets user descend stairs safely with full-foot contact
- Relief function provides a comfortable, more natural foot position when the user is sitting
- Automatic heel height adjustment from 0–5 cm makes it easy to change shoes
Click on the red 'Hot spots' in the image for more information on this detail.

Layers of extremely stable and ultra-light carbon fibre laminate connect the hydraulics in the foot with the pyramid adapter and enclose the electronics and battery in the ankle.

The 4-axis kinematics enable especially good adaptation to natural movements while walking. Four axles flexibly connect the toe plate, foot and ankle with one another.

The toe plate made from aluminium with an abducted big toe also forms the link between the carbon frame and the frontal pivot point of the hydraulics. Due to its mobility, very good ground contact is guaranteed during rollover.

The frame and heel spring made from carbon fibre stand out for their high stability and stiffness and also help to protect the hydraulics. The heel spring dampens the step at heel strike.

The battery and electronics are protected within the ankle area. The integrated microprocessor processes the sensor data and controls the hydraulics in real time.

Movements and forces that occur are recorded by the IMU (inertial motion unit), angle and moment sensors. They provide important information to the microprocessor regarding the user’s situation and gait pattern in order to adapt the Meridium accordingly. This enables the differentiation between standing and walking on level ground as well as on stairs and ramps and the activation of the energy-saving functions, e.g. when sitting.

The hydraulics control the plantar flexion and dorsiflexion of the foot independently of one another, thereby uniting flexibility and stability.
Part Number | 3C88-2 |
Based closely on the natural human anatomy, the Meridium mechatronic prosthetic foot is movable not only in the ankle area, but also in the midfoot and toe region thanks to its additional axes.
- Near-natural replication of the human foot thanks to polyaxial construction and extensive range of motion
- Automatically adapts to slopes and uneven surfaces in real time
- Intuitive Stance permits stable standing on level ground – and even on slopes
- Reduced risk of stumbling and falling thanks to increased ground clearance in the swing phase
- Lets user descend stairs safely with full-foot contact
- Relief function provides a comfortable, more natural foot position when the user is sitting
- Automatic heel height adjustment from 0–5 cm makes it easy to change shoes
Click on the red 'Hot spots' in the image for more information on this detail.
Product information
Mobis level |
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Mobility grade | MG2, MG3 |
Amputation level | TF, KD, TT, bilateral TT |
Weight [with footshell] | 1275–1555 g |
User Weight Capacity | 125 kg |
Heel height | 0–50 mm |
Range of motion | 36,5° [22° PF, 14,5° DF] |
Battery capacity | 1 day |
Sizes | 24–29 cm |
Feature | Hydraulic foot with 4-axis kinematics, Relief function, Intuitive Stance, Stair function |
Type of Feet | Microprocessor controlled |
Adjustable modes | 3 MyModes |
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Max. body weight | 100 kg | 100 kg | 100 kg | 100 kg | 125 kg | 125 kg | 125 kg | 125 kg | 125 kg | 125 kg | 125 kg | 125 kg |
System height | 132 mm | 132 mm | 132 mm | 132 mm | 142 mm | 142 mm | 142 mm | 142 mm | 145 mm | 145 mm | 145 mm | 145 mm |
Structural height | 150 mm | 150 mm | 150 mm | 150 mm | 160 mm | 160 mm | 160 mm | 160 mm | 163 mm | 163 mm | 163 mm | 163 mm |
Please see below for useful download information on the Meridium.