I had problems with both sides of both big toes, were involuted and ingrowing and kept getting infected. I had both sides of both big toe nails removed all at the same time and phenol put on to stop them growing back.
Not very pretty, especially when healing but the procedure itself was fine, the injections were the worst bit, your toe is numb afterwards, if you are squeamish then you may not want to watch though I did, I was given the opportunity to lie down so I couldn't see. I had the option of the side being removed or the whole toenails being removed and went for the former.
Had no problems with those nails since, have had with other nails but probably my RA causing havoc in my feet.