Knee Extension Assist

Knee Extension Assist

from Fillauer LLC

The Fillauer Orthotic Knee Extension Assist is a user adjustable extension assist that can be attached to virtually any orthotic knee joint. In orthotic knee joints with a locking mechanism, the Extension Assist helps insure that the knee joint reaches full extension and the lock engages, helping to enable patients in safe ambulation. The Extension Assist incorporates a mechanism that allows for let off after 35° of knee flexion, allowing for sitting without the constant pull of the mechanism causing irritation and strain. With a user adjustable elastomeric tension, individuals can dial in the amount of assist they need to suit their own activities.


  • Can be mounted to most knee joints
  • Provides extension force through a range of flexion angle degrees
  • Provides assurance that knee joint reaches full extension
  • Aids patients with weak knee extensor musculature to achieve improved function
  • Helps insure optimum function of orthotic knee joints
  • Design features let-off/break-over at 35° of flexion, allowing the patient to bend the knee without extension force being applied to the seated position


  • L2999 – Orthotic Knee Extension Assist

Suggested L-Codes are provided as a reference only. It is the responsibility of the practitioner and/or patient care facility submitting this claim to determine and submit the correct coding within all established rules and guidelines.


Product Manual

Ordering Information

024900 Knee Extension Assist

For more information and ordering, email Customer Service or call 1-800-251-6398.