Neuromas are generally benign or non-cancerous growths of nerve tissue, developing in various parts of the body. Morton?s Neuromas are confined to the nerves of the foot, most commonly, between the third and fourth toes. The condition involves a thickening of the tissue around one of the digital nerves leading to the toes and does not qualify as an actual tumor. The affliction causes a sharp, burning pain, usually in the region of the ball of the foot. A patient?s toes may also sting, burn or exhibit numbness. Often, the symptoms have been likened to ?walking on a marble.?
The exact cause of Morton?s neuroma is not known, but the choice of footwear seems be a factor. Wearing high heels (shoes with heels over 2 inches) can put extra pressure on the balls of the feet. Wearing tight or pointed toed shoes may squeeze the toes together or otherwise constrict their movement. For that reason, women are about 8 to 10 times more likely to develop Morton?s neuroma compared with men. People who are born with flat feet, high arches, or an abnormal position of the toes are more prone to developing Morton?s neuroma. This may be due to instability around the toe joints. Certain conditions that develop over time, such as bunions or hammer toes, are also associated with Morton?s neuroma. Some sports that involve running, including tennis and other racquet sports, can also increase the chance of developing Morton?s neuroma due to trauma or injury to the foot.
A Morton’s neuroma causes a “burning” sharp pain and numbness on the bottom of the foot in the involved area, and this pain and numbness can radiate to the nearby toes. The pain is usually increased by walking or when the ball of the foot is squeezed together and decreased with massaging. It may force a person to stop walking or to limp from the pain.
In some cases your doctor will be able to feel the Morton’s as a swelling in the middle of your foot. However they may also suggest an X-ray or a blood test – this is normally to rule our other causes of the pain such as arthritis. The most accurate way to diagnose Morton?s itself is with magnetic resonance imaging (MRI) or ultrasound.
Non Surgical Treatment
Relief of symptoms can often start by having a good pair of well fitting shoes fitted to your feet ensuring that the shoes don’t squeeze your foot together. Once footwear is addressed patients may require a small pre-metatarsal pad to be positioned onto the insole of the shoe to help lift and separate the bones in the forefoot to alleviate the pressure on the nerve. If the patients foot structure and mechanics is found to be a contributing cause, a custom made orthotic is usually the most convenient and effective way to manage the problem. Sometimes an injection of local anaesthetic and steroid is recommended to assist in settling acute symptoms.
If conservative treatments haven’t helped, your doctor might suggest injections. Some people are helped by the injection of steroids into the painful area. In some cases, surgeons can relieve the pressure on the nerve by cutting nearby structures, such as the ligament that binds together some of the bones in the front of the foot. Surgical removal of the growth may be necessary if other treatments fail to provide pain relief. Although surgery is usually successful, the procedure can result in permanent numbness in the affected toes.