Knee-disarticulation prosthesis
For a long residual limb at the knee: it uses end-bearing capacity and a long lever arm with a low-profile polycentric knee.
Indications
- Knee disarticulation
- Very long transfemoral residual limb
- Children (preserving the distal femoral growth plate)
Key features
- End-bearing socket with a window or flexible wall
- Low-profile polycentric knee to match thigh length
- Self-suspension over the femoral condyles
- Strong stance-phase control
Knee disarticulation leaves a long femoral lever and a bone end that can bear load directly. This lets the socket self-suspend over the condyles and transfer weight through the distal limb, sparing the groin.
The challenge is length: a conventional mechanical knee makes the prosthetic thigh sit longer than the sound side. We use a low-profile polycentric knee to keep the knee centres level and the gait symmetrical.
It is also the preferred level in children because it preserves the distal femoral growth plate, so the limb grows closer to normal and bony overgrowth is reduced.
Related solutions
TF Above-knee (transfemoral) prosthesis
A complete limb system for transfemoral amputees, combining an intimate-fit socket, a mechanical or microprocessor knee and a dynamic foot for a safe, energy-efficient gait.
Above-knee (transfemoral) prosthesis
MPK Microprocessor & hydraulic knee joints
Knee joints that read sensors thousands of times per second and modulate resistance for stance stability, smooth swing and safe descent of slopes and stairs.
Microprocessor & hydraulic knee joints
TSB-Vac Active negative-pressure (vacuum) socket system
A mechanical or electronic pump draws a vacuum between liner and socket, creating a firm link, stabilising limb volume and improving circulation.
Active negative-pressure (vacuum) socket systemDo you or a loved one need advice?
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