MEDI-REHATEK four-bar knee joint on knee disarticulation prosthesis is very differentfrom general four-bar knee joint on thigh prosthesis. Knee disarticulation joint is a dedicated knee.
In general, the connecting rods are longer in size, have a greater degree of flexion, the rotation center in extension position is in the femoral condyle. As the flexion degree increases,it has downward and forward movement. In the sitting position it ensures that the knee is not forward, knee disarticulation joint body is generally made from various types of alloys.
Knee disarticulation joints are equipped with different extension of auxiliary devices, used to assist the knee to extend straight.The stride will be more light.Extension of auxiliary devices usually use three forms like ordinary mechanical extension (spring), air pressure extension, hydraulic extension.
The picture I shows a hydraulic extension of auxiliary devices for knee joint of knee disarticulation prosthesis.
Picture I
Relative blog: How to choose prosthesis
No comments:
Post a Comment