The study concerns the testing of methodology of attachment of external foot prothesis based on anthropomorphism criteria

Inclusion Criteria:

• Unilateral lower transtibial amputation
• Prosthetic user with socket type attachment (Cohort 1) or with direct skeletal attachment (Cohort 2) and be able to walk 50 meters independently,
• Between 18-60 years of age,
• Able to follow instructions,
• Able to provide consent.

Exclusion Criteria:

• problems on the residuum,
• Non-prosthetic user,
• Bilateral amputation,
• Self-reported pain levels greater than 4 out of 10 at study outset,
• Experienced a fall within the last 8 weeks before assessment,
• Mental illness or intellectual impairment compromising participant's ability to give informed consent,
• Injuries involving contralateral (intact) limb,
• Major uncorrected visual deficit,
• History of epilepsy or recurrent dizziness,

Subjects 18-60 years old that underwent unilateral lower transtibial amputation