A knobby, bony bump develops on the side of your foot below your toe joint, due to misalignment. Bunions cause pain, irritation, and swelling at the base and side of your toe joint. Calluses and ...

This friction causes the tendons to swell ... One peroneal tendon attaches to the outside of the foot at the base of the little toe (fifth metatarsal). The other tendon goes underneath the ...