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Flex-Run Junior

Flex-Run Junior


The Flex-Run Junior is a custom designed solution for children. Its vertical compliance and efficient energy return are must haves for high active children.

Designed to be the most flexible of the running feet, the Flex-Run Junior offers increased cushioning and lower-frequency dynamic makes this foot ideal for Transfemoral and Transtibial users.

The Nike Sole is designed to offer increased stability and smooth
natural rollover.

Impact Levels

Impact LevelExample


Daily activities involving fast walking, jogging and climbing stairs.

Example: Heavy-lifting, manual labor, recreational sports.


Activities involving running, track and field, sprinting, and long-distance running.

Example: Track and field sports.



Active Tibial Progression

Proportional Response

More Junior Solutions

Flex-Run Junior Specifications

Flex-Run™ Junior Product Information
Amputation Level:



Impact Level: High to Extreme
Maximum Patient Weight: 84kg
Build Height: 200mm (7 7/8")
Categories: 1-6
Sizes: One Size
Adapter Options: Male or Female Bolt on Pyramid
Weight: 336g (11.9oz)
Flex Foot Characteristics:

active tibial progression

proportional response

Flex-Run™ Junior Features

Active Tibial Progression

Active Tibial Progression

Vertical forces generated at heel contact are stored and translated into a linear motion described as Active Tibial Progression. This action reduces the need to actively push the body forward using the contralateral foot and also equalizes stride length.

Benefit: More natural gait and reduced walking effort.

Proportional Response

Proportional Response

The layering of carbon fiber, optimized through extensive computer analysis and mechanical testing, ensures that the deflection of the carbon fiber heel and forefoot components are proportional to the user’s weight and impact level.

Benefit: Customized construction optimizes walking efficiency thus reducing fatigue for the user.