Investigation on a New Power Knee Firmware Update on Gait and Daily Life Activities for Transfemoral Amputees

Inclusion Criteria: * 50 kg \< body weight \< 116 kg * lower limb loss, amputation or deficiency * cognitive ability to understand all instructions and questionnaires in the study * Unilateral transfemoral amputees that are regular Power Knee users for at least 4 weeks * age ≥ 18 years * Moderate to high active subjects * Willing and able to participate in the study and follow the protocol * Comfortable and stable socket fit * No socket issues/changes in the last 6 weeks Exclusion Criteria: * Users with pain * Bilateral amputees * Users using passive microprocessor controlled knees * Users with cognitive impairment * Users with co-morbidities in the contra lateral limb, which affect their functional mobility * Hip disarticulation amputees * Users with osseointegrated prosthesis * Pregnant users