Lateral: 10 year old Golden retriever

• Full flexed view attempted but this is as far as the elbow will flex.
• Extensive new bone formation
  • The caudal anconeus is barely recognisable
  • Massive osteophyte on the proximo-cranial extremity of the radial head
  • Large, mature new bone extending caudally from the medial epicondylar ridge
  • Crescent shaped "ruff" of irregular osteophytes on the proximal ulna corresponding to the attachment of the joint capsule.
• Note the illusion of bone lysis created by the spaces between osteophytes - this can be mistaken for evidence of neoplasia.