Table 3.
Percent differences, ANN-predictions versus target stiffness.
| Ligament | Target stiffness (N/mm) | Percent difference | |
|---|---|---|---|
| FFN | RBFN | ||
| Tibiocalcaneal | 75.0 | 0.89% | 6.22% |
| Tibionavicular | 5.0 | −5.79% | 19.44% |
| Tibiospring 1 | 7.6 | −5.79% | 19.44% |
| Tibiospring 2 | 25.0 | −5.79% | 19.44% |
| Anterior tibiotalar | 90.0 | 2.98% | 2.00% |
| Posterior tibiotalar | 117.0 | 2.98% | 2.00% |
| Talocalcaneal interosseous | 33.8 | 6.32% | 6.58% |
| Plantar fascia 1 | 30.0 | 6.14% | 3.61% |
| Plantar fascia 2 | 45.0 | 6.14% | 3.61% |
| Plantar fascia 3 | 37.5 | 6.14% | 3.61% |
| Plantar fascia 4 | 15.0 | 6.14% | 3.61% |
| Plantar fascia 5 | 150.0 | 6.10% | 2.72% |
| Spring 1 | 16.9 | 3.22% | 8.73% |
| Spring 2 | 2.3 | 3.39% | 29.90% |
Ligament stiffness values for the patient-specific foot/ankle model alongside percent differences between target values and the ANN-predicted stiffness. (Negative percentages indicate a decrease relative to the target stiffness value.) Within the foot/ankle model, multiple linear elements comprise a single ligament; therefore, the components listed in the table represent each uniquely assigned stiffness value.