What is an indication of a ruptured Achilles tendon?

Inability to plantar flex the foot is a key indication of a ruptured Achilles tendon. The Achilles tendon connects the calf muscles to the heel bone and is crucial for actions like walking, running, and especially plantar flexion, which is the movement that points the toes downward. When this tendon is ruptured, the individual often cannot perform plantar flexion adequately or at all, leading to significant functional impairment.

Resting the foot and allowing it to be in a neutral position may also be noticed, as any attempt to push off or stand on the toes would result in discomfort or an inability to generate that force due to the compromised tendon. Thus, the inability to plantar flex the foot is a clear clinical sign pointing towards an Achilles tendon rupture.