In lower limb prostheses, securely attaching the prosthesis to the residual limb (suspension) is an important matter for everyday comfort and residual limb health. Active vacuum suspension systems are one of the methods developed for this purpose.
Prosthetic components
Below-knee and above-knee prostheses generally consist of the following parts:
- The liner (silicone sleeve) that contacts the skin
- The socket that encloses the residual limb
- In above-knee fittings, the knee joint
- The prosthetic foot
The selection of these components and how they work together are planned in line with the specialist physician's prescription and medical report.
How active vacuum suspension works
In active vacuum systems, the vacuum created between the residual limb and the socket helps keep the prosthesis in place. Some systems can adjust the vacuum level dynamically according to walking speed; the general operation of active vacuum socket systems is also based on this principle. This approach may influence how the prosthesis fits the residual limb and how it feels during use.
Considerations in diabetes-related amputations
Because skin sensitivity may be higher in amputations related to diabetes, the choice of the liner that contacts the skin and a suspension approach that can balance volume changes throughout the day are important. The appropriate choice of components is individual, and fitting is carried out after assessment by the relevant specialist.
This content is for informational purposes only; you should consult your physician for diagnosis and treatment.
