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Independent Information On Quality Lower Limb Prosthetic Components

Polycentric Knee Joints

Otto Bock (ISO 9001 Certified)

3R36

Modular Polycentric Knee Titanium with Extension Assist - Adjustable Stance-Control and Friction.

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Related Components
3R24=R36, 647G72,
Related Web Pages
Research:  Duplicating Hydraulic Gait
Research:  Knee Characterization Data
Research:  Prof C.W. Radcliffe - Biomechanics of Knee Stability Control with Four-Bar Prosthetic Knees
Component Picture


A four bar knee. Adjustment of the extension stop varies the amount of stability of the knee in stance. Adjustment of the extension assist and knee friction varies the swing control.
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Knee Specific details
Maximun Flexion Angle: 120 degrees
Knee Locking Mechanism: No
Stance Phase Control: Alignment
Swing Phase Control: Adjustable internal extension assist. Adjustable constant friction.

Details Established by REHABTechManufacturers Supplied Details
Compatibility:Male pyramid to Male pyramid Torque settings: Not Applicable
Weight: 445 g Restrictions: 100 Kg Yellow
Height: 80 mm Activity Guide: Otto Bock Matrix
Material: TitaniumAssembly/ Alignment Guide: Comes with Component
Tested Limits: 100 KgWarranty: 12 Months Unconditional, 24 Months Conditional a; Only Otto Bock Components, b; Manufacturing Instructions Followed
Test standard: ISO 10328Recommended Inspection Intervals: 6 Months
Tested By: In HouseU.S.A. L-Code: L5818
Notes: Four bar linkage, Use 3R24 foam cover. The joint is suitable for above-knee and hip disarticulation prostheses.

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REHABTech - Centre for Biomedical Engineering
Dept. of Electrical And Computer Systems Engineering
Monash University

E-mail: rehab.tech@eng.monash.edu.au
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