Aerofit Post Market Investigation

Inclusion Criteria:

• 50Kg< body weight < 136Kg

• Cognitive ability to understand all instructions and questionnaires in the study

• Intended for unilateral/bilateral individuals that fit the indications for use, fitwithin the specified criteria and with the limb length, shape and ability to use aprosthetic liner: Activity level: K1 - K4, Impact level: Low to high, Amputationlevel: transfemoral

• Congenital transverse deficiency at femoral level

• Using Seal-In Silicone Liner and Direct Socket or AeroFit Seal-In Liner and AeroFitSocket

• Able to use AeroFit Solution, see Figure 7 AeroFit Seal-In Liner Sizes and Figure 8Minimum socket height per liner profile.

• Residual limb profile: Standard or conical

• Willing and able to participate in the study and follow the protocol

• Confident (all day) prosthetic users for more than 3 months

• Older than 18 years

Exclusion Criteria:

• Participating in another research study that may affect the participation or resultsof this study (in the opinion of the investigator)

• Users that have received Botox injection as treatment for residual limb sweat issuein the last 4 months