Nerve fiber = multicellular, containing both an axon and surrounding myelin sheath. The axon comes from a single neuron, but the myelin sheath is made by a train of many myelinating Schwann cells. In the case of unmyelinated axons, the unmyelinated fiber shares each Schwann cell with several other unmyelinated axons.
Flat feet (pes planus) occur when a child has no arch in their foot. Because an arch does not form, the foot appears to turn to the outside. Children with out-toeing due to flatfeet will rarely experience pain symptoms will not require treatment.
Foot Disorders: Numb toes may be caused by disorders of the foot and gait. People having flat feet or high arches may experience numbness in the toes from inflammation and irritation caused by stress when walking. Toe numbness is also cause by problems with the joints of the toes like arthritis and avascular necrosis.