Foot disorders: Can be of the following: ...

Foot disorders: Can be of the following:
Disorders of the skin:
Athlete's foot
Callus and Corns of the Skin
Onychocryptosis (Ingrown Toenail)
Keratosis palmaris et plantaris
Disorders of the joints
Hallux valgus (bunion)
Hallux varus
Diabetic Arthropathy (Charcot Foot)
Disorders of the bones
Fracture
Jones Fracture
Dupuytren fracture or Pott's fracture
Osteomyelitis
Disorders of the nerves
Tarsal tunnel syndrome
Neuroma
Nerve Entrapment
Metatarsalgia
Combined disorders
Pes cavus (Cavus foot)
Club foot
Genetic disorders
Polydactyly
Specific manifestations of systemic disease
Diabetic foot
Rheumatoid foot
Neuropathy

Common disorder is Flat feet/ flat foot:

Flat feet, also called pes planus or fallen arches, is a condition in which the arch of the foot collapses, with the entire sole of the foot coming into complete or near-complete contact with the ground. In some individuals (an estimated 20-30% of the general population) the arch simply never develops in one foot (unilaterally) or both feet (bilaterally).It should be noted that being flatfooted does not decrease footspeed, and flat feet do not affect one's response to the Plantar reflex test. Horses can also develop flat feet.

Flat Feet in Children - Flat feet of a child are expected to develop proper arches, as shown by feet of the mother.
The appearance of flat feet is normal and common in infants, partly due to "baby fat" which masks the developing arch and partly because the arch has not yet fully developed.

The human arch develops in infancy and early childhood as part of normal muscle, tendon, ligament and bone growth. Because young children are unlikely to suspect or identify flat feet on their own, it is a good idea for parents or other adult caregivers to check on this themselves.
Flat Feet in Adults - Flat feet can also develop as an adult ("adult acquired flatfoot") due to injury, illness, unusual or prolonged stress to the foot, faulty biomechanics, or as part of the normal aging process. Flat feet can also occur in pregnant women as a result of temporary changes, due to increased elastin (elasticity) during pregnancy. However, if developed by adulthood, flat feet generally remain flat permanently.