Abstract
The spatial gross motion of the foot with respect to the shank is modelled as rotations about two fixed ankle axes: the upper ankle rotation axis (plantarflexion/dorsiflexion) and the subtalar rotation axis (inversion/eversion). The positions of the axes are determined by externally visible bony landmarks of the lower leg and are measured for a living subject. The model input data are the plantarflexion/dorsiflexion and inversion/eversion rotation angles; the model output is a 4 × 4 transformation matrix which quantitatively describes the relative position of a foot coordinate system with respect to a shank coordinate system.
| Original language | Undefined/Unknown |
|---|---|
| Pages (from-to) | 137-143 |
| Number of pages | 7 |
| Journal | Journal of Biomedical Engineering |
| Volume | 7 |
| Issue number | 2 |
| Publication status | Published - 1985 |
| Externally published | Yes |