Case of the Month: November 2008

Attached are images of a mature (6y FS) Doberman with a known history of trauma 2 months prior and resultant multilimb lameness with pain on deep palpation of appendicular skeleton. Note the SMOOTH, non-reactive somewhat circumferential perosteal reaction which is moderately mineralized along the diaphysis of the humerus and tibia.
What is this an example of and how do you treat this??