This type of knee works as a simple hinge....
This type of knee has multiple pivot points....
Utilises a mechanical 'brake' to vary the resistance to flexion....
Uses constant pressure against a rotating surface to resist knee flexion....
Utilizes a fluid control system to control the amount resistance to knee bend....
There are two types of fluid control systems: pneumatic (air) and hydraulic (fluid)....
A closed system using compression of air to vary resistance to flexion....
Fluid displacement controls the knee speed....
The manual locking knee is locked stiff when walking....
Feature a built-in braking or locking mechanism....
Feature an on-board micro-processor....