Definitely first of all would be fish oil – it is a great anti-inflammatory, and it is extremely beneficial for the joints with all of its fatty acids. In addition to that, a supplement called N2Joint would also be a great help – it has lots of ingredients aimed for joint health, so it will support your joints like no other supplement. There are more of a heavy artillery things like ostarine, but if the injury has been healed already, don't think you need it.