4 year old Labrador Retriever

Findings

There is permeative osteolysis of the proximal third of the tibial diaphysis. There is a short zone of transition and mild irregular periosteal reaction. There is a short oblique fracture through the tibial diaphysis with several small associated fragments. There is mild medial and proximal displacement of the distal segment. A transverse fracture of the fibula is present at the same level.