Abnormal flatness of the sole and the arch of the foot.
This condition may exist without causing symptoms or interfering with normal function of the foot. The inner longitudinal and anterior transverse metatarsal arches may be depressed. This condition may be acute, subacute, or chronic.
SYN: pes planus; ; splayfoot

Figure: FLATFOOT (PES PLANUS)

Subentry:
spasmodic flatfoot