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.
Hammertoe and mallet toe. Treatment. If your toe is still flexible, your doctor might recommend that you change to roomier, more comfortable footwear and that you wear shoe inserts (orthotics) or pads. Inserts or pads can reposition your toe and relieve pressure and pain. In addition, your doctor might suggest exercises â such as picking up marbles or crumpling a towel with your toes â to stretch and strengthen your toe muscles. If conservative treatments don't help, your doctor might recommend surgery to release the tendon that's preventing your toe from lying flat.