Spurs are nothing but the degenerated or decalcified part of the bone protruding out and can cause pressure on the surrounding structures and in cases it presses on nerve fibre which is very common it leads to pain and discomfort in the area that nerve supplies its sensation.
Homoeopathic Medicine has very good remedies like Calc phos, Calc flour, Ruta, Symphytum, Silicea etc. to see that the pressure symptoms like inflammation over the nerve fibre and difficulty and pain over the area is decreased . It has the ability to see that further degeneration is slowed down in many cases stopped too.(depending on the area involved and other general health conditions)