Prosthetic Knees


Impact Level
Low Medium and High Impact Scale Icon in BlackLow
Weight Limit
Approx. 640g
Swing Phase
Integrated extension spring
3 years

Key Features

The Össur NOFM1 is a small polycentric unit which can be used as a free knee with geometric stance stability, but which also comes complete with a lock mechanism and thigh release. The versatile NOFM1 is supplied with a male pyramid adapter to allow angular adjustment and the NKFM1 comes with a laminating adapter, complete with adjustable alignment discs, making it particularly suitable for patients with very long residual limbs.

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Features & Benefits

  • Compact and lightweight
  • Polycentric construction provides improved ground clearance in swing phase
  • Integrated extension assist
  • Easily converted to SAKL or HOKL with positive locking action
  • Unlimited rotation and 5mm of shift in any direction are possible with either version, as is 10° of angular adjustment, this being achieved on the NKFM1 by means of a pair of wedge shaped rotatable discs
  • Adjustable friction damping allows significant control of the swing phase, making it easy to minimise any terminal impact

Technical Information

Total Fitted Height (1) Effective Module Height (2) Fitted Height (3)
NOFM1: 159mm  NOFM1: 107mm NOFM1: 18mm
NKFM1: 151mm NKFM1: 116mm NKFM1: 27mm

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