A prosthetic foot attaches either directly to an implant or via a socket. The method used depends on the type of prosthetic and the individual's specific needs.
Direct Attachment
Direct skeletal attachment involves a surgical procedure where a metal implant is inserted into the bone of the residual limb.
Process
- Implant Placement: The implant extends out of the skin through a small opening at the end of the residual limb.
- Direct Connection: The prosthetic foot and other components are then directly attached to this implant.
- Stability: This method provides a stable connection and improved control.
According to the reference provided, "Various prosthetic appendages can be attached directly to the implant. An opening in the skin at the end of the residual limb allows the implant to extend out of the limb and attach to component elements (such as joints and appendages)."
Socket Attachment
The more common method involves using a socket.
Process
- Custom-Fit Socket: A custom socket, made to fit the residual limb perfectly, is created from the mold.
- Socket Liner: Often, a liner is worn inside the socket for comfort and to improve fit.
- Attachment Mechanism: The prosthetic foot is attached to the socket using various mechanisms like screws, pins, or suction.
Examples
| Attachment Method | Description | Benefits |
|---|---|---|
| Direct to Implant | Prosthetic attaches directly to a skeletal implant. | Stability, improved control. |
| Socket to Prosthesis | Prosthetic attaches to a custom-fit socket that goes over the limb | Provides a good fit, adaptable for different activities. |
Factors Influencing Attachment Method
- Activity level: More active individuals might benefit from direct skeletal attachment.
- Residual limb condition: The shape and condition of the limb can affect the best attachment method.
- Personal preference: Comfort and ease of use are essential considerations.
