A neuroma is a small knot of nerve endings, which can form when a nerve has been cut. It is really an attempt by the nerve to heal itself, but something goes wrong with its attempts. A neuroma can form in the tissues around the knee after an injury or after knee surgery.
The symptoms of a neuroma include sharp stabbing pains in the distribution of the nerve, and weird feelings of discomfort.
Tapping on the neuroma (Tinel's test) may reproduce the sensations.
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