Objective
This study aimed to evaluate the kinematic data and energy consumption of domestic swing and stance phase (SNS) control knee assembly in transfemoral amputees.

Method
Five male transfemoral amputees took prosthetic training of more than one week and evaluated with random applying 3 types of knee assembly; mechanical type, pneumatic type, and domestic SNS type. Kinematic data was obtained by the VICON 370 system (Oxford Metrics Ltd., UK.). Energy consumption was measured using a KB1-C (Aerosport Inc, U.S.A).

Results
Domestic SNS type showed a significantly increased walking speed, cadence and step length compared with mechanical type and pneumatic type (p＜0.05). Domestic SNS type showed a significantly increased maximal hip flexion and extension compared with mechanical type and pneumatic type (p＜0.05). Domestic SNS type showed decreased peak knee flexion at swing phase and significantly increased peak knee extension at stance phase compard with mechanical type and pneumatic type (p＜0.05). In energy consumption, the domestic SNS type tended to show a lower O₂ cost and faster walking speed than the mechanical type and pneumatic type at free-walking.

Conclusion
We concluded the domestic SNS type had more tendency toward a normal gait pattern and lower energy consumption compared with mechanical type and pneumatic type.