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1321 Polycentric 4-Bar Knee

by ST&G Corporation



The 1321 Polycentric 4-Bar Knee features constant friction swing phase control and optional manual lock and designed for patients with high safety needs.

  • Lanyard lock mechanism can be disabled to convert to a non-locking free swing knee
  • Proximal attachment has 2mm of A/P, M/L slide, and rotation adjustment
  • Optional proximal adapters available

  • Activity Level: K2
  • Knee Design Type: 4-Bar Linkage, with Friction Swing Phase Control
  • Axis: Polycentric, 4-Bar
  • Swing Phase: Friction
  • Stance Phase: Friction
  • Control Frame Material: Aluminum
  • Product Weight(g): 651-672
  • Maximum User Weight: 275lbs (125kg)
  • Maximum Knee Flexion Angle: 135 Degrees
  • Proximal Connection: Refer to chart below
  • Distal Connection: Tube Clamp
  • Trial Period: N/A
  • Warranty: 24 months from purchase date

Sold each.
Manufacturer Recommended HCPCS: L5611, L5845, L5850