Osteochondroma is a harmless painless growth that rarely requires any treatment. However, you or your child should have regular consultation sessions with a doctor to monitor the tumour as it can become malignant (cancerous) at times. This usually happens in adulthood and is notable due to increase in size of the tumour and onset of pain in a previously painless growth.
If your child does require treatment, in case the tumour causes pain, fracture, nerve irritation or if it becomes large or bothersome and causes difficulty in moving, it would be a surgical procedure. This involves the complete removal of the tumour by cutting it off the normal bone. The procedure is usually successful depending on the location of the tumour. But it can get complicated if the tumour is placed close to nerve and blood vessels.