Pes planus, commonly known as flat feet, is a condition where the arches of the feet are lowered or absent. This results in the entire sole of the foot making contact with the ground. Flat feet can be present at birth or develop over time due to factors like aging, injury, or certain medical conditions. While many people with pes planus experience no symptoms, some may have discomfort or pain in the feet, ankles, or legs. Treatment options include supportive footwear, orthotic inserts, and physical therapy to strengthen the foot muscles and improve alignment.