Cavus Foot (Charcot Marie Tooth Disease)

Cavus Foot or also known as Charcot-Marie-Tooth (CMT) Disease is a hereditary, degenerative nerve disorder that causes muscle weakness and in the hands, feet, legs, and forearms. It is characterized by slow progressive distal muscle atrophy causing loss of sensation and control of limbs. In the foot, it may cause a condition referred to as “foot drop.” Foot drop occurs when the individual is unable to lift the foot during the swing phase in gait. This results in a “slapping” gait.

Causes of Cavus Foot (Charcot Marie Tooth Disease)

CMT is a hereditary, hypertrophic, and demyelinating neuropathy of the peripheral nervous system. CMT is a genetic mutation that causes motor and sensory nerves to slowly degenerate and nerve impulses become slower and then nonexistent. With the deterioration of myelin sheath, muscles will not be able to receive the required stimulation and consequently begin to atrophy (decrease in size and waste away). This leads to a decrease in peripheral sensation and muscle response. In the foot, the big toe (hallux) can become rigid and plantarflexed (points in downward position). This condition can also affect the hands and other muscles in the foot.

Treatment of Cavus Foot

Treatment options include conservative measures such as shoegear modifications and inserts to prevent ulceration's and pain with a plantarflexed hallux. An ankle foot orthosis (AFO) can also be used for foot drop conditions.

This material is only provided as helpful information and you should always go to your medical doctor or podiatrist for a professional diagnosis.