Final answer:
Pes Planus is commonly known as flatfoot or fallen arches, a condition where the foot's arch is flattened.
Step-by-step explanation:
Pes Planus is also known as flatfoot or fallen arches. It is a condition where the arch on the inside of the foot is flattened, allowing the entire sole of the foot to touch the ground when a person is standing. This condition can be hereditary or developed over time due to various factors, such as obesity, injury, or wear and tear with age. While flatfoot itself may not be problematic, it can lead to discomfort and foot problems in some individuals.