Researching this painful condition an old apothecary chemist product was found containing Wintergreen and  Iodine, Boron and Magnesium for treating boney enlargements (anywhere on the body).
Caution: Contains iodine, use with advice where thyroid problems exist.  
Ingredients: Tasmania West Coast Beeswax, Tasmanian Olive Oil, Australian Peanut Oil, Wheatgerm Oil/Rosemary Frond Extract, Iodine, DMSO.  Pure Organic Essential Oils:  Australian Wintergreen & Black Pepper.