Ossur Unloader One® X

  • Ossur's newest edition to their Unloader One® product line.
  • Feature's their unique 3-point Leverage System consisting of 2 adjustable Dynamic Force System (DFS) straps, rigid shells, and a single upright hinge which generates unicompartmental knee unloading.
  • This unloading is only effective when needed - there will be no condyle pressure when during sitting or swing phase.
  • Lower profile, slender frame has soft edges to eliminate soft tissue irritation and contours easily to individual anatomies.
  • User friendly colour coded "touchpoints",Quick-Fit buckles, and alignment guide on hinge increase user-friendliness.
  • Discreet under clothing.
  • Left and right specific.


  • Moderate to severe unicompartments knee osteoarthritis.
  • Degenerative meniscal tears.
  • Other knee conditions that may benefit from unicompartmental unloading.

Please click here for Instructions

To determine size, measure around calf (6" below mid-patella) with leg in extension.

Calf Circumference
XS to Medium
9.75" - 16.75"
Large to XL
16.75" - 24.38"

More Details

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