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1B1-2 - Foot prosthetics


Blaze new trails.
The Meridium prosthetic foot offers you a high level of safety along with increased adaptability and a more natural motion sequence. The unique 4-axis design with hydraulic real-time control adjusts itself immediately to your walking speed and ground conditions, whether on slopes, stairs or varying terrain.The relief function automatically lowers the forefoot to the floor when you are sitting, providing a comfortable, more natural foot position.Thanks to the automatic heel height adjustment, the Meridium is suitable for various types of shoes. The inconvenience caused by frequent shoe changes is now a thing of the past. With the Meridium, you can quickly and easily adapt the heel height to your shoes, whatever the occasion.It's more than a prosthetic foot. It’s a foundation.
Product typeMicroprocessor controlled feet with dynamic ankle rotation
Mobility grade2, 3
Max. body weight125 kg
All specifications
Benefits at a glance

Meridium – balanced stability

Hans walks down a path in the forest with his Meridium prosthetic foot.
Ascending and descending slopes

Uphill or downhill – thanks to the Meridium’s ability to adapt, you can manage inclined surfaces effortlessly from the very first step. Increased safety thanks to more ground clearance when walking uphill, comfortable when going downhill thanks to the adapted rollover and fast full-surface ground contact.

Diana wears her Meridium prosthetic foot as she walks up the uneven path to her house with shopping bags.
Walking on uneven terrain

The Meridium adapts to the terrain with every step. From cobblestones, to grass, to forest paths – it offers a high level of stability on different types of terrain thanks to real-time adjustment and improved ground contact.

Judd walks down the stairs with his Meridium prosthetic foot, side by side with his son.
Going down stairs

The Meridium prosthetic foot lets you place your entire foot on the step as you go down stairs. Instead of thinking about positioning your foot correctly, you can concentrate on your surroundings.

Hans stands securely on uneven ground with his Meridium prosthetic foot.
Stable standing

The Meridium intuitively identifies when you are no longer moving and require a secure, stable stance – even on slopes or uneven terrain.

The Meridium prosthetic foot lowers itself to the floor when sitting.
Relief when sitting

When sitting, the Meridium prosthetic foot lowers itself to the floor, which achieves a more natural-looking foot position and can also help relieve your residual limb.

Hans changes from bare feet to leather shoes with his Meridium prosthetic foot.
Automatic heel height adjustment

Whether you are barefoot or wearing flat soles or heels – thanks to automatic heel height adjustment, shoes can be changed quickly and easily with the Meridium prosthetic foot.

A user navigates the Cockpit app on his smartphone.
The Cockpit app – easy mobile control

The Meridium adjusts itself automatically to diverse situations. You can easily adjust the Meridium via a smartphone using the convenient Cockpit app for iOS and Android devices. The app can be used to change the heel height, for example, or to select from a range of preset MyModes. The app also displays additional information such as the charge level of your mechatronic prosthetic foot.

Ottobock foot options
More than a foot. A foundation.

The prosthetic foot makes a difference in the success of your treatment. Learn more about prosthetic feet in general and our other foot options here.

User Experience

Moving ahead with confidence


Hans has many talents, but this is the first time he’s been able to make the most of his abilities. Whether playing an instrument, drawing or helping to decorate his new home, Hans loves being in the middle of the action. He wears the Meridium prosthetic foot – but it’s hardly noticeable to him or those around him.


Stride adjustment in real time

1) The resistance is adjusted when the foot touches the floor to achieve comfortable heel leverage that matches the user’s stride length.

2) Based on the individually adjusted resistance, the speed of plantar flexion immediately adapts to the gait situation with every step.

3) Thanks to the high degree of mobility and real-time adjustment during rollover, you benefit from prolonged, full-surface contact with the ground for the greatest possible stability and excellent traction.

4) The movable toe plate provides a large contact surface and ensures uniform pressure distribution in the forefoot area when rolling over the toes. The Meridium’s four axles give you a smoother, more natural gait pattern when rolling over the foot.

5) When your foot lifts from the floor, it remains in a rolled over position and thereby offers an enhanced level of safety as you walk.

Meridium – functions and benefits 1

The Meridium prosthetic foot offers extensive real-time adaptation to various situations, surfaces and heel heights and enables a nearly natural gait pattern. The video shows the functions and benefits based on simple sketches with user Hans.

Meridium – functions and benefits 2

The Meridium prosthetic foot offers extensive real-time adaptation to various situations, surfaces and heel heights and enables a nearly natural gait pattern. The video demonstrates the key functions and benefits.


Product information

Product typeMicroprocessor controlled feet with dynamic ankle rotation
Mobility grade2, 3
Max. body weight125 kg
Amputation levelTransfemoral amputation, Knee disarticulation, Transtibial amputation

Product Data

Mobility grade2, 3
Max. body weight125 kg
Sideleft (L), right (R)
Size24-29 cm
Weight1330 g*
Weight with normal footshell1485 g*
System height with normal footshell142 mm*
Build height with normal footshell160 mm*
Heel height0-50 mm
Range of motion36.5° (22° PF; 14.5° DF)
Footshell colourTranslucent 1, beige 4, light brown 15



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