Morton’s neuroma
Morton’s neuroma is a benign neuroma that is most typically located in the plantar nerves of the third and fourth intermetatarsal spaces. The affected nerve is distorted by extensive concentric perineural fibrosis. Thrombi may be present, and arterioles can be thickened by occlusion. Inflammation from the condition can put pressure on other healthy nerves, causing neuroma-type symptoms in ligaments.
Pain is often experienced during weight-bearing activities or when the area is compressed. Other symptoms can include tingling, toe cramping, sharp or shooting pains, and pain that worsens over time. Sufferers often feel a burning pain in the ball of the foot that can radiate out into the toes. Pain intensified when wearing shoes. Causes of the condition are thought to include abnormal positioning of the toes, flat feet, forefoot problems, high arches, and poorly fitting shoes.
Custom foot orthotic supports can help relieve pain and irritation by lifting and separating the bones to reduce pressure on the nerve. Conservative treatment with orthotics can typically prevent the need for surgery. Without treatment, the neuroma can continue to grow.
