1. Normal walking: Assistive extension with less time;
2. Slow walking: Excellent knee joint follow-up flexion with less tiptoe and less tiredness
3. Quick walking: assistive symmetric extension with flexion angle upto 60-65 degrees
4. Stair ascending: flexion control during swing mode and assistive extension during standing mode.
5. Stair descending: natural gait with sole grounding and less buffering by yielding
6. Up hilling: natural gait with less tiptoe
7. Down hilling: yielding at any angle with safer down hilling
8. Standing up: assistive extension with effective burden reduction on intact leg
9. Deep squat: well balanced deep squat in synergetic assistive flexion
10. Rest on standing: body support on two legs with less burden on intact leg