are you more interested in designing the ankle/leg/foot or redesigning the blade?

Question: are you more interested in designing the ankle/leg/foot or redesigning the blade?
- Keywords:
  artificial leg,
  blade,
  design
Asked by JJ to Zach on 14 Mar 2017.
- Zach Welshman answered on 14 Mar 2017:
  
  My research is solely (pardon the pun) concentrated on understand the natural human motion of the foot before any external products have been introduced. Once natural motion of the foot is established, I could then work on products to optimize this.

Question: are you more interested in designing the ankle/leg/foot or redesigning the blade?