Fx, Fy, Fz

Fx, Fy, Fz symbols denoting resolved components of ground reaction force (anteroposterior, vertical and horizontal components respectively); Figure 1
Figure 1: Resolved components of ground reaction force. Fx, anteroposterior; Fy, vertical; Fz, horizontal. This article was published in Neale's Disorders of the Foot, Lorimer, French, O'Donnell, Burrow, Wall, Copyright Elsevier, (2006).