Skip navigation

LP Vari-Flex®

LP Vari-Flex®


The LP Vari-Flex is designed for users with long residual limbs that do not have enough clearance for the Vari- Flex.

Impact Levels

Impact LevelExample


Daily activities involving gentle, steady walking with the use of a walking aid.

Example: Moving around at home, modest walking in the community.


Daily activities involving average walking with the ability to vary speed or walking pattern.

Example: Going to the shops, confident outdoor walking.


Daily activities involving fast walking, jogging and climbing stairs.

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



CARBON-X® Active Heel

Full Length Toe Lever

Proportional Response

Split Toe


L5981 L5986

Note: Responsibility for accurate coding lies solely with the provider treating the patient. Össur assumes no responsibility or liability for the provider’s coding decisions. Össur’s coding suggestions rest on its best judgment and are subject to revision based on additional information or changes in the alpha-numeric system.

More Dynamic Solutions

LP Vari-Flex Specifications

LP Vari-Flex® Product Information
Warranty Information
Amputation Level:



Impact Level: Low to High
Maximum Patient Weight: 166kg (365lbs)
Categories: Size 22-24; Cat. 1-5 / Size 25-30; Cat. 1-9
Sizes: 22-30
Weight Of Foot: 574g (20.3oz) w. Pyramid and Foot Cover
Build Height Standard: 68mm (2 11/16") w. Pyramid and Foot Cover
Heel Height: 10mm (3/8")
Adapter Options: Male Pyramid or Lamination Adapter
Flex Foot Characteristics:


full length toe lever

proportional response

split toe

LP Vari-Flex® Features

CARBON-X® Active Heel

CARBON-X® Active Heel

The Carbon-X Active Heel stores the energy during loading response as the amputee transfers his or her body weight onto the prosthetic foot. Energy is gradually released from the heel providing optimal return for forward progression of the limb.

Benefit: Reducing impact to the joints and residual limb thus increases comfort, reduces joint and limb damage.

Full Length Toe Lever

Full Length Toe Lever

The full length keel/toe lever matches the length of the sound foot, providing improved support to the prosthetic limb during late stance. It ensures that users spend equal time on the prosthetic foot and natural limb, thus providing improved walking dynamics and reduced impact to the sound limb.

Benefit: Improved walking symmetry and reduced impact to the sound limb.

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.

Split Toe

Split Toe

A split toe feature allows the foot to adjust to uneven surfaces, allowing amputees to walk with stability and comfort on uneven ground.

Benefit: Helps to maintain balance, stability and reduces peak impact during loading.

Unity® - Sleeveless Vacuum Suspension

Unity offers the security and freedom of vacuum suspension, but without the sensation and restrictions of a sleeve. This advanced system from Össur effectively addresses volume fluctuation and is totally compatible with Flex-Foot technology.

Key advantages

  • No sleeve required: Greater mobility and user acceptance
  • 15-22 in Hg Vacuum: Effective volume stabilization
  • Simple design: Quick and easy to achieve/release vacuum
  • Independent pump: Foot function uncompromised
  • Light weight: Complete system weighs only 130g

Unity for all

With the Unity Vacuum System by Össur, there is finally an elevated vacuum system for all users. Whether an above-knee or below-knee, low active or high active, mechanical or microprocessor solution is required, the Unity Vacuum System offers the flexibility to combine a variety of Össur feet and knees to achieve the optimal combination of equipment for each unique user.

Unity is only recommended with sleeveless Seal-In technology 

Unity® Product Information
Amputation Level:
Impact Level: All
Foot Sizes For Unity: See Relevant Foot Specifications
Maximum Vacuum: -23inHg (600mmHg)
Normal Operating Pressure: -16-20 InHg
Added System Weight: 130g W/ Pump, Socket Valve And Tube
Foot sizes See relevant foot specifications
Unity® Order Form