To report the computed tomographic (CT) documentation of humeral intracondylar fissure (HIF) developing after complete ossification of the humeral condyle (HC). Clinical report. Male 3 year old working (English) Cocker Spaniel. Sequential CT screening (659-day interval between analyses). A sagittal hypodense fissure typical of incomplete ossification of the humeral condyle (IOHC) was identified ≈ 22 months after screening CT examination documented a normal elbow joint. Even in dogs with clinical features typical of the condition most commonly termed IOHC, fissure formation and propagation can occur after ossification is complete.