1C30 Trias

1C30 Trias

by Ottobock

The overall structure of the 1C31 Trias+ is similar to the human foot. The heel and forefoot elements form the arch structure. The base spring connects the heel and forefoot springs to deliver smooth, unified performance. When examing the ground reaction forces, there are relatively small differences between the prosthetic and contralateral side – this is a result of the foot’s excellent shock absorption and terminal stance support properties. The ankle moment graph shows a smooth, controlled movement that matches physiological movement very closely.

The 1C31 is the result of creative prosthetic design and innovative technology. Conjoined dual springs in the heel and forefoot provide shock absorption at heel strike as well as a more natural rollover. Secure, controlled movements give your patient greater confidence while walking because the foot adapts well to various walking speeds and uneven surfaces.


  • Lightweight carbon construction

  • Shock absorption at heel strike

  • Smooth rollover

  • Good energy return

  • Secure, controlled movements

  • Adapts to various speeds and surfaces

  • Stress reduction for the sound extremity Functionality-When stress is placed on the heel, the Trias+ cushions the impact for increased comfort and simultaneously supports plantar flexion of the foot. As the foot rolls forward, energy is seamlessly transferred to the forefoot. The result is a foot that helps your patient walk with a more natural gait.

  • During mid-stance, the lower leg moves forward. During this process, the forefoot springs are first stressed via the soft base spring, which makes it easier for the patient to shift their weight to the forefoot. During late stance, both springs work together for exceptional forefoot stability. A large portion of the energy stored during rollover is returned.

Product Details:

21, 22, 23, 24, 25, 26, 27, 28, 29, 30
Product Weight
14 oz
Weight Limit
275 lbs
Activity Level
Mounting Type
Energy Storing Energy Return, Rotation Torsion

Additional information:

Trial Period
36 months
L Code
L5981, L5986
Sandal Toe

For more information visit http://www.ottobockus.com

360 product photography created with Arqball Spin technology visit www.arqspin.com for details.

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