What foot position is likely to occur when the posterior tibial tendon is ruptured?

When the posterior tibial tendon is ruptured, the individual may experience pronation of the rearfoot. The posterior tibial tendon plays a crucial role in stabilizing the arch of the foot and controlling the motion of the rearfoot during walking and running.

When this tendon is compromised, the arch becomes less stable, and the foot tends to roll inward excessively, leading to pronation. This position can affect the alignment of the lower extremities and may contribute to discomfort or pain in the foot, ankle, and even further up through the kinetic chain.

Understanding this phenomenon is essential in the context of pedorthics, as it emphasizes the importance of the posterior tibial tendon in maintaining proper foot mechanics and highlights the role of various foot positions in the management of foot conditions.