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Comfort-Brake Knee (pneumatic system)

Item #: 3R92
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Suggested HCPCS Coding: L5822 + L5845 + L5850

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Same brake mechanism as the 3R90. The lower joint section is formed as a pneumatic cylinder. To control the swing phase, flexion and swing phase damping of the progressively acting dual-chamber pneumatic system are individually adjustable.

Extension and flexion damping of the integrated dual-chamber pneumatics in the 3R92 can be regulated with a screwdriver in the accustomed manner.

When fitting users with mobility grade 1, the following applies: these knee joints with friction brake are contraindicated for unsure patients who are unable to systematically use the braking mechanism during the gait cycle i.e. to lock the knee joint at heel contact and unlock it when the forefoot is loaded.

Scope of Delivery

3R92 Comfort-Brake Knee
2R77 Tube-Adap,Long-34mm-Steel


Activity Level K3
Maximum Body Weight 275 lbs (125 kg)
Material Aluminum
Proximal Connection Pyramid Adapter
Distal Connection Tube Clamp
Maximum Knee Flexion Angle 135 degrees
Knee Center to Proximal Connection 40 mm
Product Weight 895 g
Build Height 216 mm
Distal Build Height 190 mm
Proximal Build Height 26 mm


Refine results

LLP Prosthetist Documentation

Reimbursement: Documentation Guide


PDF Document | Published: Apr 17, 2023

LLP Physician Documentation Guide


PDF Document | Published: Apr 17, 2023

3R90 / 3R92 Brochure

Product Information

PDF Document | Published: Jul 1, 2016

3R90 / 3R92 Instructions for Use

Instructions for Use

PDF Document | Published: Jul 13, 2020