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Product Information

3A2500 Polycentric Knee Joint with Hydraulic Swing Phase Control

  • Adjustable hydraulic end position damping for optimal wearing comfort
  • Adaption to  walking speed
  • Shiftable proximal connection in A-P direction approx. 10 mm
  • Shortened leg during swing phase by polycentric knee joint construction
  • Simple adjustment options of the hydraulic extension- and flexion resistance by means of sensory feedback (clicks)
  • Integrated pneumatic chamber for extension assist
  • Simple and safe switching into freewheel mode (cycling mode) by means of push button
  • Various proximal connection options (pyramid and M36 threaded connection)
  • Energy saving initialization of swing phase
  • Mechanical stance phase controle by polycentric technology (posterior position of pivot point)
  • High-capacity hydraulics due to bigger zylinder volume - thermically inoffensive
  • Excellent running smoothness due to high-quality bearings

Technical Specifications

  • Max. patient weight: 150 kg/ 330lbs
  • K Level 3-4
  • Connection proximal: adjustment core
  • Connection distal: adjustment core
  • Knee flexion angle: 136°
  • Overall height: 224 mm
  • Overall height of joint head: 36 mm
  • Effective height: 196 mm
  • Effective proximal height: 23 mm
  • Effective distal height: 173 mm
  • Warranty: 12 months


  • Cosmetic soft foam cover 62A52 and 62A152

Manufacturer Recommended HCPCS: L5848, L5814, L5850, L5950, L5920, L5830

*The listing of codes with these products should not be construed as a guarantee for coverage or payment. Ultimate responsibility for the coding of services/products rests with the individual practitioner.