Ossur Unloader One Knee Brace

Unloader One® is a knee brace that is cllinically proven to alleviate knee pain, improve function and help reduce your reliance on medication. A comfortable companion for running, cycling and outdoor adventures.

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Unloader One® is a comfortable, lightweight, and low-profile osteoarthritis knee brace that provides excellent suspension and unloading leverage. Utilizing Össur’s clinically proven 3-Points of Leverage, the dual Dynamic Force Straps are easily fine-tuned using the SmartDosing® system. Recent research demonstrates that Unloader One reduces pain, improves function and decreases the use of pain medication.

Examples of Use

  • Mild to severe unicompartmental osteoarthritis
  • Unicompartmental knee conditions requiring load reduction, such as Articular Cartilage Defect Repair,  Avascular Necrosis, or Tibial Plateau Fracture
  • All non-contact activities

Product Features

  • Össur’s Sensil® liners are designed to improve comfort and reduce migration
  • Color-coded Quick Fit buckles simplify application and removal
  • Thigh circumferences of 13.5” to 29” (34.3cm to 73.5cm) and calf circumferences of 9.8” to 24” (24.9cm to 61.5cm)

Product Sizing Chart




9.8 – 12.2″ / 25 – 31cm


12.2 – 14″ / 31 – 35.5cm


14 – 16.75″ / 35.5 – 42.5cm


16.75-20” / 42.5 – 51cm


20-24” / 51 – 61.5cm

* Circumference: 6″ / 15cm below mid-patella

Additional Documents:

Unloader One Brochure

Unloader One Instructions for use – Unloader One – OTS and Custom

Unloader One Instructions for use – Unloader One with Smart Dosing