Morton's neuroma is the common name given to the nerve irritation that is found in the ball of the foot that may or may not be accompanied by an inter-metatarsal bursae (a bursa-neuromal complex). It is often associated with inflammation or degeneration and often occurs with constant pressure or irritation of the nerve from the surrounding bony structures or local bursas (fluid filled sacs). Morton's Neuroma can cause symptoms such as a sharp pain, burning even a lack of feeling in the ball of the foot and associated toes.
The pain of Morton's neuroma occurs when the nerve connecting the toe bones (metatarsal bones) becomes irritated or compressed. The exact cause of the irritation is unknown, but it may be the metatarsal bones pressing against the nerve when the gap between the bones is narrow. This causes the nerve and surrounding tissue to thicken. Some experts believe that a number of other foot problems, including flat feet, high foot arches, bunions and hammer toes, may also play a role in Morton's neuroma.
Symptoms associated with a neuroma include a dull burning sensation radiating towards the toes, a cramping feeling, or even a stinging, tingling sensation that can be described as being similar to an electric shock. It is often worse when wearing shoes with most people finding the pain disappears when removing their shoes.
You might first seek advice from your family doctor about your foot pain. He or she may refer you to a doctor or surgeon who specializes in foot disorders. Before your appointment, you may want to write a list of answers to the following questions. When did your symptoms begin? Did your symptoms begin gradually or suddenly? What type of footwear do you wear for work? Do you participate in sports? If so, what types in particular? What medications and supplements do you take regularly? Your doctor may ask some of the following questions. Is the pain worse in certain pairs of shoes? Does any type of activity ease the pain or worsen it? Are you having pain in any other part of your body?
Non Surgical Treatment
Treatment depends on the severity of your symptoms. Your doctor will likely recommend trying conservative approaches first. Arch supports and foot pads fit inside your shoe and help reduce pressure on the nerve. These can be purchased over-the-counter, or your doctor may prescribe a custom-made, individually designed shoe insert, molded to fit the exact contours of your foot.
Operative treatment of Morton?s neuroma should be entertained only after failure of non-operative management. Standard operative treatment involves identifying the nerve and cutting (resecting) it proximal to the point where it is irritated/injured. This is usually done through an incision on the top (dorsal) aspect of the foot, although an incision on the sole (plantar) aspect of the foot can be used. Some physicians will attempt to treat Morton?s neuroma by releasing the intermetatarsal ligament, and freeing the nerve of local scar tissue. This may also be beneficial.