FIGURE 3.

Definition of the origin (${\mathbf{p}}_{\mathit{\text{or}}}$), branch point (${\mathbf{p}}_{\mathit{br}\_i}$), via point (${\mathbf{p}}_{\mathit{via}\_i}$), point below the metatarsal head (${\mathbf{p}}_{\mathit{MH}\_i}$), and insertion (${\mathbf{p}}_{\mathit{ins}\_i}$) to calculate the lengths of the proximal ($L_{\mathit{\text{prox}}\_i}$) and distal ($L_{\mathit{\text{dist}}\_i}$) parts of the ith PA. PA, plantar aponeurosis.