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Prosthetic Legs· 5 min read· 01/01/2025

Above-Knee Prostheses

General information on the structure of above-knee (transfemoral) prostheses, suspension, knee joint and foot options, and the fitting process.

Main topic: Prosthetic leg applications
Above-knee prostheses: Person sitting on a chair at home putting on their prosthetic leg

An above-knee prosthesis (transfemoral prosthesis) is a lower limb prosthesis used for limb loss occurring between the knee joint and the hip joint. These prostheses are planned according to the person's activities of daily living and level of mobility. Fittings are carried out in line with the specialist physician's assessment and medical report.

The Importance of Custom Design

In above-knee prostheses, it is essential that every prosthesis used is custom-designed, whatever its function. Although there are general criteria, fittings may differ depending on the person's anatomical structure, residual limb length and activity level. For this reason, the measurement and testing stages are an important part of the process.

Basic Components

The main elements considered in above-knee prostheses are the following:

  • Suspension (attachment): Secure attachment of the prosthesis to the limb is decisive for balance and control during walking.
  • Socket: The custom-made part that is in direct contact with the residual limb.
  • Knee joint: Depending on the person's level of mobility, mechanical or microprocessor knee joint options may be considered; the general working structure of these components is decisive for gait control.
  • Foot and ankle: Different foot options suited to the person's walking pattern may be planned.

Fitting and Rehabilitation

As important as choosing the right components are the fitting process and the rehabilitation that follows. Learning to use the prosthesis, gait training and the necessary adjustments are done over time. This process progresses step by step under the guidance of the relevant health professionals.

This content is for informational purposes only; you should consult your physician for diagnosis and treatment.

This content is for information only and does not replace diagnosis or treatment. Applications are carried out in line with a specialist physician's prescription or medical report. Results may vary from person to person; you are advised to obtain a detailed opinion from your physician before the procedure. · Last updated: 01/01/2025