Cuboid syndrome is a common problem on the lateral side of the foot. It occurs when the cuboid is not as stable as it should be and contraction of the peroneus longus muscle allows its tendon to try and sublux the cuboid bone.

 

More on Cuboid Syndrome:

http://www.podiatry-arena.com/podiatry-forum/tags/index.php?tag=/cuboid-syndrome/

http://www.podiatry-arena.com/podiatry-forum/showthread.php?t=20678

http://www.podiatry-arena.com/podiatry-forum/tags/index.php?tag=/subluxed-cuboid/