Figure 2
From: Mallard hindlimbs locomotion system respond to changes in sandy ground hardness and slope
Diagrammatic representation of mallard hindlimb postures during extension and flexion. (A) Posture at hindlimb touch-down; (B) mid-swing hindlimb posture; (C) single-stride cycle hindlimb posture diagram on natural uphill sand ground (with a 1/60Â s interval between each line). TMTPJ Tarsometatarso-phalangeal Joint, ITJ intertarsal joint.
