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OP4 Knee

OP4 Knee


The OP4 Knee is a pneumatic, monocentric knee joint with brake function. Due to the finely adjustable brake, the joint can be adapted to the individual’s safety requirements.

Benefits of OP4 Knee

  • Braking behavior can be adjusted to suit the user
  • Individually adjustable swing phase for a harmonious gait
  • Highly acute flexion angle for more freedom of movement
  • Kneecap provides additional protection for both the knee and clothing

End UserSpeak to your prosthetist for more information

Impact Levels

Impact LevelExample


Daily activities involving average walking with the ability to vary speed or walking pattern.

Example: Going to the shops, confident outdoor walking.

OP4 Knee Specifications

OP4 Knee™ Product Information
Warranty Information
Amputation Level:


Knee Disarticulation

Impact Level: Moderate
Maximum Patient Weight: 100kg
Weight Of Knee: 680g (1.50lbs)
Knee Flexion: 145°

Support Documents