Which of the following is a common characteristic of postural abnormalities?

A common characteristic of postural abnormalities is fallen arches, also known as pes planus. This condition involves a lowering or complete collapse of the medial longitudinal arch of the foot, which can lead to uneven weight distribution, altered gait, and potential discomfort or pain in the feet, legs, and lower back. Fallen arches can significantly impact a person's posture by causing instability and alterations in the alignment of the body.

While high arches, shortened toes, and flat feet are also conditions that may affect foot posture, fallen arches are particularly noteworthy as they are widely recognized in pedorthics as a prominent postural abnormality associated with a range of compensatory changes throughout the musculoskeletal system.