A Morton's neuroma, or interdigital neuroma, is a painful condition which involves a nerve on the plantar aspect (bottom) of the foot. Occasionally a neuroma develops following a bruising injury to the sole of the foot, such as might be caused by jumping onto a rock or other objects, but in general, the origin of the condition is unknown.
The cause of this problem is often due to impingement of the plantar nerve fibres between the metatarsal heads and the intermetatarsal ligament. It is entirely a biomechanical phenomenon. Differential diagnoses include stress fracture, capsulitis, bursitis or ligament injury at the metatarsal-phalangeal joint, a tendon sheath ganglion, foreign-body reaction and nerve-sheath tumour.
What are the symptoms of Morton?s neuroma? A sharp or stinging pain between the toes when standing or walking. Pain in the forefoot between the toes. Swelling between the toes. Tingling (?pins and needles?) and numbness. Feeling like there is a ?bunched up sock? or a pebble or marble under the ball of the foot.
There is a special orthopedic test called the Morton's test that is often used to evaluate the likelihood of plantar nerve compression. For this test, the client is supine on the treatment table. The practitioner grasps the client's forefoot from both sides and applies moderate pressure, squeezing the metatarsal heads together. If this action reproduces the client's symptoms (primarily sharp, shooting pain into the toes, especially the third and fourth), Morton's neuroma may exist.
Non Surgical Treatment
Properly resting the foot in addition to the use of appropriate footwear including, as necessary, pads and arch supports, often brings relief from Morton?s Neuroma, without resorting to surgery. A physician may also recommend anti-inflammatory drugs, cortisone injections and, should the condition fail to resolve itself, surgery.
Surgery is occasionally required when the conservative treatment is not able to relieve your symptoms, particularly if you have had pain for more than 6 months. 80% of patients who require surgery report good results, with 71% of people becoming pain-free.