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

Investigation on a New Power Knee Firmware Update on Gait and Daily Life Activities, a Randomized Controlled Double-blinded Cross-over Investigation

The goal of this interventional study is to investigate a new firmware in development for Power Knee on gait and daily life activities in unilateral transfemoral amputees. The main question it aims to answer is:

What are the effects of a new firmware on sit-to-stand, level walking and stair ascent ?

Researchers will compare both a new and the current marketed firmware to see if there is any changes in performance.

Participants will be asked to perform some activities of daily living and some functional tests.

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