Mechanical 4-Bar Knees

We offer an extensive range of mechanical and pneumatic 4-Bar knees. Their geometry provides stability and security to the user. The 4-Bar polycentric system provides shortening of the swing, making them ideal for knee disarticulation patients, or those with long residual limbs.

Features and benefits

Mechanical 4-Bar Knee 1:

Mechanical 4-Bar Knee 2: A 4-Bar knee suitable for knee disarticulation with extension assist and friction adjustment. It comes complete with laminating anchor.

Mechanical 4-Bar Knee 3: A compact 4-Bar knee with adjustable buffer to change its stability to suit the individual. Adjustable friction and extension assist. Integral proximal pyramid adaptor.

Mechanical 4-Bar Knee 4: A compact 4-Bar knee with internal extension assist and friction adjustment. Adjustable buffer to change the stability of the knee to suit the individual. Integral proximal pyramid adaptor.

Mechanical 4-Bar Knee 5: A low profile, lightweight 4-Bar knee suitable for knee disarticulation. Adjustable friction control and extension assist. Swing phase is adjustable by spring control.

Recommendations for use

These mechanical 4-Bar knees are suitable for use with low functionality levels and high safety and stability needs.

Category: Knees

Specifications

	Mechanical 4-Bar Knee 1	Mechanical 4-Bar Knee 2	Mechanical 4-Bar Knee 3	Mechanical 4-Bar Knee 4	Mechanical 4-Bar Knee 5
Build Height	212mm	119mm	115mm	80mm	141mm
Weight	No lock: 466g Right lock: 542g Left lock: 542g	Stainless Steel: 916g Titanium: 671g	Aluminium: 520g	Stainless Steel: 719g Titanium: 481g	Aluminium: 531g
Activity Level	K1 - K4	K1 - K4	K1 - K4	K1 - K4	K1 - K4
Weight Limit	100kg	125kg	100kg	125kg	100kg
Proximal Adaptor	Male Pyramid	Lamination Anchor	Male Pyramid	Male Pyramid	Male Pyramid, Lamination Anchor & Lamination Adaptor
Distal Adaptor	30mm Tube Adaptor	Pyramid Adaptor	30mm Tube Adaptor	Pyramid Adaptor	30mm Tube Adaptor
Amputation Level	Transfemoral	Knee Disarticulation	Transfemoral	Transfemoral	Transfemoral & Knee Disarticulation